Weddell Seals: Growing Up on Ice

Update

Expedition Update: This expedition has been delayed until 2019 due to some issues related to the research project. We anticipate Bridget Ward heading out with the team in October 2019.

What Are They Doing?

A Weddell seal and pup out on the sea ice near McMurdo Station, Antarctica. Photo by Alex Eilers.A Weddell seal and pup out on the sea ice near McMurdo Station, Antarctica. Photo by Alex Eilers. Weddell seals are one of the best studied seals and a classic example of adaptation to the extreme Antarctic environment. A large body size and thick blubber layer help them to stay warm both on and under the ice. Their streamlined shape, body oxygen stores, and collapsible lungs allow them to reach dive depths of 600 meters (almost 2,000 feet!) and remain under water for over an hour. However, they do not begin life with these advantages. Weddell seal pups are born on the sea ice with a small body size and almost no blubber.

The question is: What does it take for a Weddell seal to survive and successfully make the transition between two extreme environments – above and below the Antarctic sea ice – in only a matter of weeks? To answer this, Cal Poly scientists and a marine mammal veterinarian will venture to Antarctica to study the development of thermoregulation and diving in Weddell seals.

Where Are They?

A view of McMurdo Station from Ob Hill. Photo by Tim Spuck.A view of McMurdo Station from Ob Hill. Photo by Tim Spuck. While in Antarctica, the research team will be living at McMurdo Station, the U.S. Antarctic Science Center. McMurdo is the capable of housing up to 1,258 residents, the largest community in Antarctica. McMurdo Station is on Ross Island, a volcanic island (with the southernmost active volcano, Mt. Erebus) south of New Zealand in the Ross Sea. McMurdo Station has its own science labs, engineering centers, dormitories, galley (kitchen), and even a US post office.

Expedition Map

Project Information

Dates: 1 October 2019 to 28 October 2019
Location: McMurdo Station
Project Funded Title: Growing Up on Ice: Physiological Adaptations and Developmental Plasticity in Weddell Seal Pups Across Two Extreme Physical Environments.

Journals

Subscribe to %1 PolarTREC Journals

Meet the Team

Bridget Ward's picture
Springfield Central High School
United States

Bridget Ward grew up in the small town of Wales, Massachusetts. She has been teaching at Central High School in the city of Springfield, Massachusetts for eight years. Her courses include biology, pre-AP biology, pre-AP biology laboratories, and AP environmental science. Bridget attended Westfield State University and earned both a Bachelor of Science in Biology and a Master of Education in Secondary Biology.

Since graduating she has continued seeking out additional educational experiences including traveling to the Galápagos with the University of Arizona to study Marine Biology and to Costa Rica with Texas A&M University as an EarthWatch Fellow learning about the implementation of conservation policies.

While she was growing up, Bridget's parents encouraged learning through exploration by traveling around the world. She continues this exploration by taking advantage of school vacations to visit new locations and uses these experiences to develop new lessons. She believes strongly in teaching geo-literacy in the classroom and engages students in curricula by addressing how what they are learning is applicable in life beyond the classroom.

Heather Liwanag's picture
California Polytechnic State University
San Luis Obispo, CA
United States

Dr. Heather Liwanag is a comparative physiologist at California Polytechnic State University, San Luis Obispo. She is interested in the physiological adaptations of animals to their environment, and the evolutionary processes involved in those adaptations. Much of her research has focused on thermoregulation (the regulation of body temperature) and energetics (metabolic rates) in vertebrate animals, including seals, sea lions, and even lizards. Her current project is studying the development of thermoregulation and diving in Weddell seal pups in Antarctica.

Melissa Voisinet's picture
California State Polytechnic University
CA
United States

Subscribe To Journals!

Email:

Latest Comments

I will be extra prepared!!! I also get a whole additional year to learn from my research team, before we get into the field.
What a heartbreak, but I'm so glad you get to go next year! You will be SO prepared ;)
I am actually heading on a summer adventure, but when I return I will be focusing on bulking up for my trip to Antarctica. The plan is to consume a lot of protein and work out focusing on muscle gain...
Yes, there is just a slight size and weight difference between you and an adult Weddell seal (though you will look a bit bigger with 4 or 5 more layers on!). It's a good thing that you will be...
Bridget, these are great questions and answers. However, I am curious why the scientists do not test the blood for more than hemocrit levels and blood oxygen. Once they have the blood, are there no...