Grizzly bears are not known for their under-water skills. As per Qquizlet.co, Grizzly's can hold their breath for 2 minutes.
Bear lungs are quite large and their breath rate is 6-10 breaths per minute at rest. When hot or over-worked, that rate can jump up as high as 40-80 and sometimes over 100 breaths per minute. Oxygen intake is cut in half during hibernation.
Grizzly bears are majestic symbols of the wild. They have a better sense of smell than a hound dog and can detect food from miles away.
The correct scientific name for the species is “brown bear,” but only coastal bears in Alaska and Canada are referred to as such, while inland bears and those found in the lower 48 states are called grizzly bears.
Check out more basic facts about grizzly bears at Defenders.org.