Deepest polar bear (white bear)

Last updated: June 27, 2018 at 19:22 pm

Up to 6 m (20 ft) — While underwater, the polar bear (Ursus maritimus) shuts its nostrils and flattens its ears but its eyes stay open to spot prey. Although it is considered a marine mammal, the polar bear is the largest land carnivore, and because its habitat is largely devoid of vegetation, it is the most carnivorous of all bear species. Hunting dives are rare since the polar bear is typically a stealth predator and because its coat is highly buoyant. It can nonetheless remain underwater for over three minutes and swim for hundreds of kilometres. It has no natural predators and does not fear humans, especially seal-like divers, which makes it a very dangerous animal. The polar bear is known as nanook by the Inuit.

As of 2017, videographer Mario Cyr had observed more than 30 bears underwater in the Canadian Arctic. None of the bears observed by Cyr ever dove beyond 6 m (20 ft), including aggressive bears that chased him underwater. As of 2018, claims of deeper dives by polar bears are unsubstantiated.
Interviews with Mario Cyr and Dr. Chris Harvey-Clark (Dalhousie University) by Diving Almanac & Book of Records official

Comments are moderated: (1) Stay on topic (2) Be respectful (3) Refrain from vulgarity and abusive language (4) Do not publish materials that violate copyright. OFFENDING COMMENTS WILL BE DELETED.
In order to ensure your browsing experience is as enjoyable as possible, banners are kept to an absolute minimum, which means that advertising revenues alone cannot sustain this 100% FREE publication. Researching and updating the Diving Almanac requires a lot of time and dedication. If you believe the diving community needs a central body of information to record, validate and make available our shared history and accomplishments, please show your support by making a contribution to the Diving Almanac via PayPal (Porbeagle Press). Thank you!