Seal Facts - Woods Hole Oceanographic Institution
2024年4月11日 · Gray seals are gregarious animals—they gather in large groups on shore to breed, give birth, and molt. Female gray seals live up to 35 years and males about 25 years. Gray seals primarily hunt squid, fish, and sandeels; their …
The Return of the Seals – Woods Hole Oceanographic Institution
2013年11月26日 · There was once a bounty on gray seals in New England; hunters in Massachusetts and Maine got $5 if they turned in a nose or skin. From the 1890s until the 1960s, an estimated 135,000 seals were killed, and seals disappeared from Cape Cod. Then the federal Marine Mammal Protection Act of 1972 outlawed seal killing.
Weddell seals in the Antarctic strategically time their most extreme ...
2024年10月29日 · Weddell seals in Erebus Bay, Antarctica, may look like couch potatoes when they are resting on ice. However, these seals, which are the southernmost population of the southernmost living mammals, are exceptional divers that can reach depths of more than 900 meters and recorded dives lasting 96 minutes, which is well beyond their aerobic threshold.
Seal Whiskers Inspire Marine Technology – Woods Hole …
2016年1月27日 · Hungry seals will keep their whiskers ready to search out the tiny clues that lead to food. And I’ll keep flipping over rocks to find other useful lessons from nature, waiting to be uncovered. This prototype flow sensor, designed by Heather Beem, incorporates seal …
The value of iron for a seal - Woods Hole Oceanographic Institution
2024年4月11日 · The seals’ whiskers act as a sort of dietary timeline, incorporating molecular signatures from various food sources as they grow. Using a technique called stable isotope analysis, the researchers can identify different signatures in a seal’s whiskers and match them to potential prey items.
Seals and Wild Horses on Sable Island, Nova Scotia
Shero and her colleagues are investigating how iron in the mother seals’ diets impacts the pup’s diving capacity– and survival rates. An estimated 90% of Sable Island seal pups die during their first year, most likely because of the increased competition for food. “Iron is how seals carry lots of oxygen in their bodies for long dives.
The Return of the Seals GROWING HERDS RAISE QUESTIONS ON SHARKS, FISH, AND POOPT by Lonny Lippsett here was once a bounty on gray seals in New England; hunters in Massachusetts and Maine got $5 if they turned in a nose or skin. From the 1890s until the 1960s, an estimated 135,000 seals were killed, and seals disappeared from Cape Cod.
Plastics in Our Oceans - Woods Hole Oceanographic Institution
In 30 years, a 50% decline in Northern Fur Seals has been reported. Elephant seal entangled in fishing line. Photo by John Domont. Courtesy of the Center for Marine Conservation. These curious, playful seals would often play with fragments of plastic netting or packing straps, catching their necks in the webbing.
Edge of the Arctic Shelf - Woods Hole Oceanographic Institution
Bearded and ringed seals spend their entire lives in the Arctic. Hooded and harp seals spend summers in the Arctic, and harbor seals only occasionally venture north into the Arctic. The bearded seal (Erignathus barbatus) is the largest arctic seal, and bears the closest similarity to walrus. They are bottom feeders and have prominent whiskers.
Scientists and fishermen team up to film seals in fishing nets
2020年8月6日 · The research has strengthened WHOI’s already good working relationship with the local fishing community, and study results should help identify patterns in the seals’ behavior—such as favorite feeding times—that could enable fishers to minimize interactions between seals and gillnets in the future.