Ocean Chemistry
By now, we are familiar with the concept of global climate change due to humans burning excessive amounts of fossil fuels that release carbon dioxide and other greenhouse gases. However, not all carbon dioxide ends up in our atmosphere. Approximately 1/3 of that carbon dioxide ends up getting absorbed by the ocean, where it is causing ocean acidification. This issue, which you may not have heard much about, is a serious threat to shell-forming plankton, corals and other organisms. So, how are the oceans becoming more acidic? What are the potential effects of ocean acidification? 8th graders students have been investigating these questions during an applied chemistry unit. 

Modeling Ocean Acidification
So students could explore ocean acidification first hand, I borrowed a kit from the University of Hawaii's Center for Microbial Oceanography: Research and Education (C-MORE). The kit had all the materials for an experiment that simulated ocean acidification using active yeast to generate carbon dioxide.  Students used Lab Quest handheld computers with probes to measure the carbon dioxide generated by the yeast and the effect of this carbon dioxide on the pH of water.

Yeast, a living fungus that respires, was placed in a bottle with sugar and water to activate it. The carbon dioxide gas released by the yeast respiration was directed through rubber tubing to two different places: a chamber of air, where carbon dioxide was measured by a special probe and a bottle of water, where the pH was measured by another probe. In the investigation, students observed the carbon dioxide levels dramatically rise as the pH slowly lowered. When they graphed and analyzed their data, students discovered for themselves the relationship between carbon dioxide and pH.

Protect Our Coral Reefs 
In addition to our hands-on labs, students have also been analyzing atmospheric and ocean data sets that indicate a rise in carbon dioxide that contributes to global warming and ocean acidification. Moreover, we have discussed the real-world impacts of these issues. One of the most devastating predicted consequences of ocean acidification is the degradation of reef-building corals. Here in Hawai'i, we rely on healthy coral reefs for the diverse array of life they support, as well as their recreational uses, fishing resources, and shoreline protection. Let's work together to combat ocean acidification, another disastrous consequence of climate change. 

How will YOU make a difference? 

Energy in Hawai'i
In our studies relating to climate change, my students have been researching Hawai'i's energy production and consumption. We are very fortunate to have multiple renewable energy sources, such as solar, wind, biomass, hydroelectric, and geothermal, but renewables only account for about 8% of our total energy consumption. Over 85% of our energy comes from domestic and international petroleum imports. That's right, most of our electricity comes from the burning of oil. 

One energy source that really interests my students is solar energy. Despite the intensity and duration of our sunlight here in the tropics, students were surprised to learn that less than 2% of our energy consumption comes from solar energy. Yet progress toward a more energy-independent Hawai'i is being made, and solar energy is increasingly popular. In fact, right now, photovoltaic panels are being installed on the roofs of our school that will convert solar energy into electricity to power Star of the Sea. 

Engineering Solar Ovens
But how about harnessing solar energy to cook food? Solar ovens, also called solar cookers, convert sunlight into heat energy, which gets trapped in the oven and raises its temperature. My students were challenged to design and build a solar oven that would maximize solar heat gain and retain the heat for cooking. To construct their ovens, the students used common household materials, including many reused and recycled items such as chip bags, newspaper, and shoe boxes.  

Solar ovens should be covered with reflective material, such as aluminum foil, in order to catch as much sunlight as possible. Used chip bags, cleaned and turned inside out work well for this purpose. There needs to be a window-like opening on the top of the oven covered with clear plastic. Most students left the flap when they cut the opening which was then engineered so the angle could be adjusted. Sunlight, both direct and reflected, enters the oven through this clear opening and gets trapped. Crumpled newspaper is a good insulator to line the inside of the box. Black construction paper works well as a cooking surface on the bottom of the box because it absorbs a lot of heat. If you've ever worn a black shirt on a hot day, you understand this concept!

Oahu's Watershed
When you turn on the tap or take a shower, have you thought about where your fresh water comes from? Here on Oahu, all of our water comes from underground sources that originated as rainwater in a process that can take up to 25 years. Our watersheds, areas of land enclosed by mountain ridges, are important because they catch and collect the rainfall to replenish groundwater. The boundaries of the watershed roughly correspond to ahupua'a, the native Hawaiian land division system from mountains to the sea.

The 'O'opu
One of the organisms we hoped to see in Makiki Stream was a fish endemic to Hawaiian waters, the ‘o‘opu stream goby. These fish evolved from saltwater goby ancestors. Although ‘o‘opu live in freshwater streams as adults, their fertilized eggs wash downstream, and young ‘o‘opu spend the first several months of their lives in the ocean before they make their way back upstream. Most of the ‘o‘opu species have a very cool adaptation in order to make this journey. Their pelvic fins fuse together to form a suction cup which helps them fasten to rocks, the stream bottom, and even to climb waterfalls.

Makiki Stream does not flow uninterrupted down to the sea; it has been channelized and areas of it are diverted through underwater tunnels. These tunnels get incredibly hot and limit the movement of the young ‘o‘opu trying to make it back upstream from the sea.  While some streams in Hawai'i have healthy populations of ‘o‘opu, the fish have not been found in Makiki Stream for many years.

Climate Change
Climate change threatens local ecosystems already degraded by invasive plants and animals, excessive development, and pollution. We know that current climate change is mainly caused by humans burning fossil fuels. Global warming and sea level rise cause very challenging conditions for life on Earth, and islands, like Hawai'i, are particularly vulnerable. Yet there is good news: people can take action to limit global warming and mitigate its effects.

Climate change will have some dire consequences here in Hawai'i. Scientists have predicted that, in addition to vast areas of flooding due to sea level rise, Hawai'i will most likely receive less rainfall in the future. Due to increased temperatures, the clouds will increase in elevation and might pass over our island's mountains instead of hitting them. Streams like Makiki will shrink over time. And if there is less rainfall, there is less freshwater to replenish our underground aquifer. We cannot let this happen. In follow-up classroom lessons, students will be investigating ways that they can make choices that help reduce global warming and conserve energy and water resources!

  
Sharing my expedition learning with students has been most meaningful, but I have also enjoyed telling my story to the larger community of teachers and the public. Today, I had the opportunity to present about my Arctic expedition at the Hawai'i Science Teachers Association (HaSTA) annual conference! I think they'll be some very enthusiastic educators from Hawaii applying to the National Geographic/Lindblad Expeditions Grosvenor Teacher Fellowship Program this year...

Message to Science Teachers
Here is a link to the Prezi for my session entitled Exploring the Arctic: My Grosvenor Teacher Fellowship. At the start of the talk, I showed a picture of myself in the GTF hat on the deck of the Explorer in the Arctic. I told everyone I would let them know how I ended up on the adventure of a lifetime and how they potentially could as well, through the Grosvenor Teacher Fellowship. I then summarized the GTF Program: expedition travel as professional development for teachers committed to geo-literacy. Next, I explained the National Geographic's three components of geo-literacy, and there was rich discussion about how science teachers can incorporate these components into their curricula. Finally, I got into the details about my expedition, the Land of the Ice Bears, and I explained the characteristics of the Arctic Svalbard region using maps and pictures.

I moved through a series of my photographs, highlighting some of the main features of the expedition, including the ship, my shipmates, the landings, the wildlife, and the scenery. Then, I connected my expedition to the larger issue of global climate change as I described lessons learned on my voyage. I explained why Arctic sea ice is so important as critical habitat for wildlife and for regulating global climate, and I shared charts and data that illustrated the recent decline of Arctic sea ice. The “Chasing Ice” trailer was viewed and I described calving events, glacial retreat, and other effects of climate change in the Arctic. I concluded with a summary of how my GTF experience has impacted me and then played my interview from the Video Expedition Report: “it’s a once-in-a-lifetime opportunity!”

Other Community Outreach
I am so proud to be an ambassador for National Geographic and Lindblad Expeditions and to help carry their missions forward. For my community outreach, in addition to today's HaSTA presentation, I have leveraged existing partnerships with community organizations, and I have actively sought out new avenues for sharing my experiences. I currently volunteer as an interpreter at the Waikiki Aquarium, and I was able to set up a “learning lunch” slideshow and talk story about my Arctic voyage and the GTF Program. I also volunteer for plankton outreach with Kahi Kai (One Ocean), a local marine conservation group. Before and after my voyage, Kahi Kai published my blog posts. My other outreach activities came as a result of me reaching out to local media. I was able to do pre and post voyage live interviews with our two local news stations KHON2 and KITV4, a live interview on Hawaii Public Radio, an a pre and post voyage print interview with the Midweek. If you haven't yet, you can check out all these interviews on my In the News page!  I have applied to present at the 2015 National Science Teachers Association (NSTA) conference in Chicago this spring, and I hope I have the opportunity to attend.

Looking Ahead...
There are quite a few special things to look forward to this year. All middle school students will be conducting science field labs this year for a unique program called From Mauka to Makai: Understanding Climate Change Impacts in the Ahupua’a. This program represents a partnership with Hawaii Nature Center in Makiki, and as part of it, we will be conducting two field studies, one mauka and one makai, and producing a final environmental service project. 

I also plan to select twenty 7th and 8th graders (by application) to take to the Big Island May 14th-16th for National Geographic's 2015 Bio Blitz. Every year, the Bio Blitz is held at a different National Park, and this year it will be hosted by Volcanoes National Park. The Bio-Blitz is a 24-hour event where teams of students, teachers, rangers, community members, National Geographic staff, and scientists work together to conduct a comprehensive biological survey of the park. That is, they work hard to find and identify as many of the animals, plants, fungi, and other organisms that they can!  For more information about the Bio Blitz, please visit this website: www.nationalgeographic.com/explorers/projects/bioblitz/    

Mahalo for joining me on a science learning adventure this year! Let's all work together to make sure we have a productive and rewarding experience.


6th Grade Welcome Letter/Course Policies
7th Grade Welcome Letter/Course Policies
8th Grade Welcome Letter/Course Policies

Whenever I open up an issue of National Geographic magazine, I immediately flip though the pages to preview the photographs. Though I later return to each article to read the text, the images are most powerful in telling the stories. One of the most exciting aspects of the Grosvenor Teacher Fellowship is the opportunity to learn from the expert photographers associated with National Geographic.

I am a totally inexperienced photographer myself and, armed with a hand-me-down Canon Power Shot, was determined to gain some skills. At our pre-voyage workshop in April, naturalists and Lindblad Expeditions-National Geographic certified photo instructors Michael S. Nolan and CT Ticknor presented a session on expedition photography that was very inspiring. I was fortunate enough to have both Michael and CT on my Lindblad-National Geographic expedition through Svalbard, where I continued my learning. They both have the technical skill to help the most sophisticated photographers but also the heart to help novices like me.  

These following expedition photography tips are not my own and must be credited to Michael and CT. However, I will provide my interpretation and examples of my own photos taken on the expedition. Still daunted by settings and white balance, I shot in Auto mode but I did try and pay attention to composition and create images that would help me tell a story.

1. Take an establishing shot.
Each landing we made, I tried to take a photo that broadly captured a sense of place--usually with the ship in the background.  The establishing shot provided useful context for the other photos.  This is a shot of the beautiful isthmus at our last landing. The white sky and muted colors were otherworldly.

2. Leave space in the frame.
With the polar bears, it was temping just to zoom in and bulls-eye the animal in every frame. However, when I pulled back and left some space, I got powerful images of the bear in its vast landscape of pack ice.

3. Rule of thirds.
When shooting landscapes, think of the frame as divided in horizontal thirds and group elements by thirds instead of halves. So, in this shot of water and sky, instead of half water and half ice, I aimed for two-thirds water and one-third sky.

4. Light sets the mood.
Both the midnight sun and the silvery light in the high latitudes were like nothing I have ever seen. I looked for reflections and shadows. I tried to get up at different times, like this shot at 2am, to capture the mood.

5.Get in close.
Though I did not have a powerful zoom lens, I did try and get in close where I could. One of the ways I could reasonably do this was by taking macro shots of the vegetation. I often lay down on the spongy tundra to get at ground level. Another way was to zoom in on a glacier face to capture the ice texture.

6. Use continuous shot to capture action.
Get to know your continuous shot setting!  When capturing action, it is a great way to ensure you don’t miss the look of the arctic fox, the take-off of the guillemot, or in this case, the yawn of the polar bear!

7. Consider the angle of your shot.
I tried to get the ship itself and other guests in some of my shots not only for scale and to establish the scene but to find new angles. During a visit by a curious polar bear, I went up a deck to get this shot.

8. Layer your images.
I would often hear CT remind us of this when we were on hikes ashore. One easy way to accomplish this is to place something dominant in the foreground with an interesting background like this whale vertebra with hikers and the ship behind it.

9. Get a sense of scale.
It can be much more powerful to know how big or how small a subject. After photographing tiny vegetation for several days, it finally occurred to me to occasionally put my finger in the shot for scale!  Another example: I took a lot of shots of the bird cliff but this one with the Zodiac in it offers scale.

10. “Don’t Point and Shoot— Aim and Create”
This is a motto that Michael and CT shared at our April meeting that resonated for me while on my expedition. I did not want to come back having snapped thousands of pictures but not really capturing the landscape, the wildlife, and my shipmates in a creative way. I am definitely more mindful of how to aim and create interesting images that tell a story. I am inspired to continue my own journey with photography. And one of these days, with a successful Arctic expedition behind me, I might even venture out of Auto mode.

This morning, we ate breakfast, said our goodbyes, and began to disembark the ship. I cannot believe we are leaving the Land of the Ice Bears! It was hard to leave my shipboard home and all my new friends with whom I have shared this great adventure.

I have a flight to and overnight in Oslo, a flight to and overnight in Newark, and a long flight to Honolulu before I am back home. Though school is not in session until August, I am already thinking of lessons that draw upon this rich experience. I hope my Arctic adventure will foster a more global perspective, encourage environmental stewardship, and inspire a passion for discovery among my students!

Gaining a sense of place in the high Arctic was a powerful take-away: feeling the tundra sponge beneath my feet on a hike, smelling the freshness of a massive ice cap, hearing the snow bunting sing its solo in the vast Arctic landscape, and seeing a polar bear navigate from ice floe to ice floe in a seemingly endless scramble of sea ice. It was a sparse, harsh, and beautiful environment, and it has left an indelible impression on me. I now have a first-hand experience in the region, and my biggest take-away is not only a sense of place but also a sense of urgency to protect it.

I have renewed passion about combating climate change and specifically about conserving our polar regions. In Hawaii and elsewhere in the Pacific islands, negative effects of climate change are already being experienced. I scientifically understood how climate change is a worldwide concern, but my Lindblad Expeditions-National Geographic expedition gave me first-hand knowledge of its global reach.

As longtime Maui-resident, naturalist CT Ticknor shared in our April workshop, the Grosvenor Teacher Fellowship is a heavy kuleana. Kuleana is a rich, nuanced native Hawaiian word meaning both privilege and responsibility.  Now that I have returned from my Arctic voyage, it is my duty to tell the story of my expedition but it is also my honor.

I feel incredibly fortunate to have been awarded a Lindblad Expeditions-National Geographic Grosvenor Teacher Fellowship. My voyage through Arctic Svalbard has enriched my teaching and changed my life.

It is hard not to mark this day with lasts: Oh, this is our last hike, our last lunch, our last reindeer, etc...But it is a fact that this is our last full day in Svalbard. And I am not ready to leave. This windy morning, the ship entered Bellsund and was finally able to find a suitable anchoring spot so we could go ashore. The staff reported not often landing in this particular place, but I think it was a happy accident. The scenery was breathtaking. Ellen, Aimee, and I had a good long hike in this Arctic desert, and for a last hike, it was amazing.

In some ways, Svalbard is exactly as I had pictured and imagined, but my experience has no doubt been full of lovely surprises. Over 60% of the archipelago is glacier-covered, and I certainly have seen plenty of ice in various forms. However, I have also hiked on the spongy green tundra dotted with colorful wildflowers. Svalbard's geology is also quite varied and has rich occurrences of fossils; in fact, there is bedrock from almost every geologic period present here.  I was prepared for the cold temperatures but taken aback by the dryness of this climate. People generally associate deserts with heat, but this region is technically an Arctic desert due to lack of precipitation. Arctic deserts are defined as being located above 75 degrees north latitude and receiving less that 10 inches of precipitation annually, an amount comparable to the Sahara.

Tonight was also the last nightly recap in the lounge. Lucio explained the disembarkation procedures in detail before our last delicious sit down dinner. People used the shared computers to upload photos from yesterday's polar plunge and share photos for a guest slideshow.

Tonight, we enjoyed a bit of social time in the lounge with crew and guests. Aimee, Ellen and I spent time packing and reviewing our journals and photos. Tomorrow our voyage ends where it begins back in Longyearbyen, where the ship will dock and we will disembark. My Lindblad-National Geographic expedition is coming to an end. However, my missions of incorporating all my new learning into my curriculum and of sharing my Arctic story with as wide an audience as possible is just beginning. 

All photographs by Cristina Veresan unless otherwise indicated.
Read the Lindblad Naturalist Daily Expedition Report (DER) here.

Overnight, our ship had begun to retrace its path along the southern coast back to Longyearbyen, and in fine weather, we were able to make a landing after breakfast at Ardalsnuten. This morning's hike made it clear why every staff member I talked to pre voyage stated the most essential piece of expedition gear in two words: rubber boots. Knee high rubber boots are so important because when we go ashore, we travel by Zodiac boats; when we jump out of the boats, it's often into about six inches of frigid Arctic water! Today's hiking conditions were also particularly soggy, and on our long hike, Ellen and I were both thankful we had our rubber boots and waterproof pants. Temperatures had warmed, and there was lots of sunshine and plenty of meltwater.

On our wet walk we encountered many bones of the great whales: ribs, vertebrae, and a moss-covered skull. The bones were settled on what was
once a beach terrace but is now far from the current shoreline. The earth is slowly rebounding from when it was covered by ice. Svalbard's land, remember, was shaped by glacial activity.  

This area used to be an important area for early hunters, and we saw a weathered trapper's cabin that had a decrepit beauty. We saw lots of piles of reindeer scat but only a few actual reindeer. I had hoped we would be approached by reindeer, for I have not yet had a close encounter.

Lindblad Expeditions provides guests high quality, engaging interpretation through its naturalist staff during voyages. Additionally, they invite a Global Perspectives Guest Speaker familiar with the region to explore with guests and provide informal and formal commentary. On our expedition, we were fortunate to have polar ecologist Dr. Andrew Clarke with us to share insight into climate change and its impacts in the polar regions. 

This afternoon, as we cruised across Storfjorden, headed for the southernmost tip of Spitsbergen, Dr. Clarke gave a compelling lecture in the lounge. He made sure to distinguish between climate and weather at the start of his talk. Weather refers to short term conditions while climate reflects the long term average conditions for a region. Simply put: climate is what you expect, weather is what you get.

Dr. Clarke outlined how our modern climate is not what we would expect. That is, our global climate is experiencing a pronounced warming trend beyond the range of natural variability. Sea levels have risen in the last century. And the scientific consensus is that the major cause is an increase in atmospheric CO2, predominantly due to the burning of fossil fuels. Climate change is real; let's not debate it's existence, let's work on solutions.

The effects of climate change in the Arctic are quite dramatic. Data presented indicated that the Arctic is warming rapidly, ice is forming later and melting faster, and the melting surface layer of the permafrost is getting deeper. I thought of the underweight polar bear we had seen. The glacier calving we witnessed. The tidewater glaciers with newly exposed land beneath them, evidence of retreating. This Arctic ecosystem is threatened, and I have a newfound sense of urgency to protect it. I have observed evidence of climate change in Hawaii and now more evidence on the other side of the world. Global change is truly an issue that connects us all. But combating it can, too!   

Later in the afternoon, the weather turned cold and the wind picked up a bit. Just before our evening recap, two fin whales were spotted and the captain positioned the ship closer to them. The two whales were feeding and surfaced periodically to breathe. There's something so powerful about being in the presence of great whales. So much of the animal is unseen under the surface but you can sense it's immensity. 

It was difficult to get a great photograph, but the experience is unforgettable and, like many times on this voyage, I just tried to be fully present and enjoy the moment. I was one level up from the bow and it was fun to watch everyone move from port to starboard and back again, shutters clicking, as the whales silently repositioned themselves underwater.

Yes, the wind has picked up and we are getting a lot of ocean motion tonight. After another fabulous dinner, everyone gathered in the lounge for a preview of our Video Expedition Report (VER).

On each Lindblad Expeditions voyage, an expert videographer shoots the amazing moments along the way and by the end of the expedition, presents a complete, edited short documentary VER. Talented artist and adventurer Brian Christensen joined us on our Svalbard expedition and created our VER. As I expected, he beautifully captured the stunning scenery, documented diverse wildlife, and conducted interviews with guests and naturalists. 

Goodbye to another awesome day in Svalbard!

All photographs by Cristina Veresan unless otherwise indicated.
Read the Lindblad Naturalist Daily Expedition Report (DER) here.

I hate to admit this, as curious as I am about the natural world, I have never really considered myself a bird person. I have a tough time using binoculars, and I feel like I can never see what birders get that excited about-- literally. Unless it's a big wading bird, I cannot even get a good look and certainly not a good picture. My Mentor Naturalist Karen talks about birds with such passion, though. When I see her on the bridge early this morning, she tells me, "We saw an ivory gull!" and I want to share her excitement as she relates how these birds often follow bears to scavenge their kills. When another naturalist explains how the little Arctic tern migrates from the high Arctic all the way down to Antarctica and back again in a year, I can appreciate this record-breaking accomplishment. And when I am hiking out on the tundra, I love straining to hear the snow bunting sing out its solo tune. But birds still leave me feeling kind of ambivalent.

That all changed at the Kapp Fanshawe bird cliffs.

I dare anyone to spend some time cruising right below these towering cliffs crammed with a quarter million nesting murres and not be in complete awe of bird life. That's how I spent this morning. Once we sailed out of Bear Sound and through the Hinlopen Strait, we had made our way to this amazing point of land in Eastern Spitsbergen. As we approached the cliffs, I was dwarfed by the sheer rock cliffs rising hundreds of feet from the sea lined with shoulder-to-shoulder murres. I was deafened by bird noise. Oh, and did I mention the acrid guano smell? 

That is, until the chicks are ready to leave the nest. At this point, usually at night, the father will call the chick down from the ledge for what might be a free fall into the sea. Selection at work! Surviving chicks swim away with their father, and he continues to provide food for them as they develop. 

I took my attention away from the cliffs for a second and looked down at the sea. There were a few ice floes that shone white above the water but glowed with a blue hue below the surface. Suddenly, two of the ice floes began moving. Fast. I turned to naturalist Doug Gualtieri, pointed down, and (foolishly) asked "Doug, why is that ice moving?" 

I participate in plankton outreach with a local non-profit back in Hawaii, Kahi Kai ('one ocean' in native Hawaiian). For my voyage, they have given me a unique tool we use in our outreach for mobile microscopy: the Cell Scope. The Cell Scope contains powerful optics but easily connects to an iPhone in order to observe and photograph plankton. I facilitate an annual plankton lab with my students at Star of the Sea, but I never imagined I would get the chance to do one in the high Arctic! 

As excited as I am to observe the macro life up here in the Arctic, I am also interested in the micro life drifting undetected in these frigid waters. The base of this Arctic food chain, tiny plankton, was on my mind, and today I finally got a chance to conduct a plankton tow. The first officer Piers took me out in a Zodiac after shuttling guests, including Ellen, to shore for a hike. With us were Aimee to observe and photographer Sisse Brimberg to capture the action. 

The plankton net is a funnel shaped, fine-meshed net connected to a plastic bottle. When the plankton net is towed through the water for awhile, you get a concentrated sample of plankton in the bottle. 

As we cruised by Idunbreen glacier and I gripped the tow line as the plankton net streamed behind us in the icy water.

 Enjoy this slideshow of plankton tow images taken by the amazing Sisse Brimberg, and graciously provided to me for use on my blog. 

When I got back aboard the Explorer, I could see lots of organic matter suspended in the sample and, thankfully, some swimming plankton! I took a cursory look at my sample in the Zodiac landing area but quickly realized I needed to find a more suitable spot. 

So I took my sample and the Cell Scope up to the Observation Deck where I could interact with guests and enjoy the majestic alpine scenery.  Over and over, I used a plastic dropper to draw up a small amount of water to put on a slide, put the slide on the Cell Scope, and tried to find as much plankton as possible. I was happy to explain to guests what I was doing and share my passion for plankton. 

Ellen had a fantastic hike on the rocky coast adjacent to Idunbreen Glacier and shared these images with me. Lindblad Expeditions provides guests the opportunity to explore pristine and remote places, and the company is guided by a strict set of Governing Principles that really sets them apart in their field. The principles outline the commitment to guest safety and the high level of service. But one that really sticks out for me is "Positively impact the areas we explore and in which we work." One of the ways we do that is to leave only footprints and take only photographs. When we are ashore, we do not take anything with us: artifacts, fossils, rocks, specimens, bones etc...However, Ellen's hiking group made an exception to the no-take rule when they cleaned a small area of plastic trash.  Now that's a positive impact! 

It was an awesome experience to once again observe a polar bear in its natural habitat. This large male bear appeared healthy and fat. We watched him walk across the ice with his huge paws, stopping every once and awhile to look up at our ship. Often, polar bears will roll on the ground after they swim to get the salt off them. But this bear in one amazing moment sprawled out on his belly!  
He came near the ship only once before lumbering away.

I got thinking about a lecture that Magnus had given about polar bears.  Polar bears diverged from brown bears in their evolution about 300,000-500,000 years ago and have adapted to their extreme conditions in both physical and metabolic characteristics. Because polar bears and brown bears can mate, there has been discussion in the scientific community about whether or not they are each different species, but recent genomic evidence confirms they are in fact unique species that have intermingled and interbred at various times.  In fact, Magnus reported that due to climate change causing habitat to overlap, brown bears are again mating with polar bears in some parts of the world, and a few hybrid bears had been identified.

The silvery light in the high latitudes continues to amaze me. A group of us is gathered on the bow, taking in the scenery. When the water is this calm, the light so silvery, and the sky this full of wispy clouds, is it even possible to take a bad photograph? Gorgeous subject matter. 

I try not to think about the days of my voyage counting down, for I do not want this experience to end. Life aboard a ship has a sense of shared initiative and camaraderie like nothing else, and this ship is filled with such capable, fun, and  interesting shipmates. Two of them are in my cabin right now. Aimee and Ellen are having another rich discussion tonight, dissecting our day and brainstorming all the ways we can incorporate our new learning into our curriculum.  Oh, and there also might have also been some girl talk. 

All photographs by Cristina Veresan unless otherwise indicated.
Read the Lindblad Naturalist Daily Expedition Report (DER) here.