Search results for Walruses

Environment Nov 6, 2021

EXPLAINER: How warming affects Arctic sea ice, polar bears

Majestic, increasingly hungry and at risk of disappearing, the polar bear is dependent on something melting away on our warming planet: sea ice.

Plants & Animals Nov 2, 2021

Pinniped craniofacial musculature provides insight on its role in aquatic feeding

Pinnipeds—a group including seals, sea lions and walruses—are relatively recently derived marine mammals that evolved from terrestrial carnivorans and reentered the marine environment. Their recent adaptations to an amphibious ...

Evolution Oct 26, 2021

Fossil dental exams reveal how tusks first evolved

A wide variety of animals have tusks, from elephants and walruses to five-pound, guinea pig-looking critters called hyraxes. But one thing tusked animals have in common is that they're all mammals—there are no known fish, ...

Earth Sciences Oct 14, 2021

Scientists discover large rift in the Arctic's last bastion of thick sea ice 

A new study documents the formation of a 3,000-square-kilometer rift in the oldest and thickest Arctic ice. The area of open water, called a polynya, is the first to be identified in an area north of Ellesmere Island, Canada's ...

Earth Sciences Sep 3, 2021

Global warming threatens the existence of an Arctic oasis

The University of Helsinki's Environmental Change Research Unit (ECRU) took part in an international study investigating the millennia-long history of the most important oasis in the Arctic and the potential effects of climate ...

Plants & Animals Aug 19, 2021

Female and young walruses depend on disappearing Arctic sea ice for food sources

A new study shows that disappearing sea ice is a significant element of the food web supporting female walruses and their dependent young in the Arctic's Chukchi Sea. Researchers were able to trace biomarkers that are unique ...

Plants & Animals Aug 18, 2021

Penis worm: Widespread yet understudied sea creatures

Australia's oceans are home to a startling array of biodiversity—whales, dolphins, dugongs and more. But not all components of Aussie marine life are the charismatic sort of animal that can feature in a tourism promotion, ...

Plants & Animals Aug 17, 2021

Large numbers of giant jellyfish found off the UK coast: What to do if you are stung

The UK has seen some exciting marine visitors recently, such as walruses, humpback whales and bluefin tuna, but a current group of arrivals has been much more of a cause of concern. Large numbers of huge stinging jellyfish ...

Plants & Animals Aug 12, 2021

How to spot the elusive narwhal

Finding animals in the wild can be tough, even for researchers with access to airplanes, high-end cameras and other costly gear.

Plants & Animals Jul 8, 2021

Scientists learn how otters stay hotter

Sea otters are a hardy lot.

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