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 …

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.

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 …

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.

2008年8月21日 · Grey seals congregate and relax on Billingsgate Shoal, Cape Cod. Fecal samples from live seals and birds revealed that even apparently healthy marine animals such as these seals can harbor pathogens, including antibiotic-resistant microbes and Giardia , an intestinal parasite that can cause fever, vomiting, and diarrhea that is well known to ...

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.

2008年1月23日 · Simply put, if there isn’t enough sea ice, seals can’t haul out on the ice, and polar bears can’t continue to hunt. In each of the first three years of the USGS surveys, the near-shore ice melted an average of about 100 days, and the Southern Beaufort Sea polar bear population grew about 5 percent per year.

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.

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.

These curious, playful seals would often play with fragments of plastic netting or packing straps, catching their necks in the webbing. The plastic harness can constrict the seal's movements, killing the seal through starvation, exhaustion, or infection from deep wounds caused by the tightening material.