Tag Archives: humpback whale
Just before suppertime on Friday evening the krill team sent out a radio broadcast: they’d spotted five humpback whales feeding just off Outcast Island. The two whale biologists at Palmer Station grabbed their orange float coats and asked if we wanted to come along. What happened over the next three hours was well worth missing dinner.
The team studies whales and dolphins by sampling minute amounts of their skin and blubber. The work entails following enormous creatures in very small boats over a cold, deep ocean. It reminded me of the old tales of whaling, except thankfully we weren’t trying to kill whales—we were trying to learn more about their population size, diet, and genetics. Click through the slideshow to learn more about humpback whales and how the team studies them:
Dr. Read and Swaim are part of a four-person team studying whales along the Antarctic Peninsula. The other two, project leader Dr. Ari Friedlaender of Oregon State University and Dr. David Johnston of Duke, are to the south of us on the Laurence M. Gould, the ship that brought us here. Humpback whales were severely overhunted in the early twentieth century, and this research will help scientists understand how the whales are recovering. It’s illegal to hunt or harass whales, and the scientists on the team have to get two sets of permits in order to be allowed to do their research. The restrictions help make sure the research doesn’t harm the whales. Over the past 15 years, tens of thousands of whales and dolphins have been safely sampled by researchers using these methods. We’ll take a closer look at how the sampling procedure works in an upcoming post.
Tuesday was a day off for the staff of Palmer Station. The day was sunny and calm—perfect conditions for a favorite off-duty pastime called recreational boating. We boarded a zodiac with station staff including the carpenter, logistics supervisor, satellite communications engineer, and utility mechanic. We loaded up with sunscreen, donned sunglasses against the brilliant white light, and pulled on orange float coats for safety. Everyone had a camera at the ready, and we set off to explore icebergs and islands.
For us it was a great introduction to the animal inhabitants of Palmer Station. We saw mammals, flying birds, flightless birds, and even a small but indispensable animal that keeps the whole ecosystem ticking. Can you guess what it was? Join us on our zodiac tour in the slideshow below, and find out the answer at the end:
Because krill are at the heart of the food chain, scientists pay a lot of attention to them. Krill are also at the center of Project CONVERGE. The team wants to know whether tides and convergence zones help bring together krill into concentrations high enough to serve as feeding hotspots for penguins. Radar helps the team map the currents and convergence zones. But how do they find out where the krill are? In our next post, we’ll go out with the scientists to answer that question.