The beaver is a perfect example of animal adaptation--in this case to an aquatic environment. Nose and ear valves shut as the animal submerges, an nictitating membranes--similar to those of birds-- serve as natural goggles to protect the eyes from irritation.

Beavers are powerful swimmers that can swim underwater for up to 15 minutes. As the beaver dips underwater, the nose and ears shut to keep water out. Transparent inner eyelids also close over...

Jul 5, 2011 · A beaver’s nose has a special inner flap that seals out water when the beaver is submerged. Beavers have a special passage from their nose to their throat which connects to the upper lungs. This lets the beaver chew and breath through the its nose at the same time.

A unique feature of the beaver is a second set of eyelids. The secondary eyelids, known as a nictitating membrane, are white and form an inner eyelid. Additionally, their ears and nose can close while underwater! Beavers have lips that close behind the incisors which allow them to gnaw underwater.

Dec 12, 2016 · Nose, eyes, and ears are approximately in line. During swimming, the nose, eyes, and ears of the beaver are in line above the water surface (see video and photo).

Jun 27, 2015 · They’ve got those protruding ears like a beaver, but notice how the nose is even bigger relative to their head size? The main difference is that with swimming river otters, you often just see the head and neck, not the full length of the body.

Oct 6, 2021 · Eyes, Ears, and Nose. Beaver have the following sensory adaptations to help with various underwater tasks: Beady little eyes comprised of three eyelids that help protect their eyes from branches and twigs. They can see clear underwater but display poor eyesight on land. Small ears with excellent ability to detect sounds from far away.

Beavers (genus Castor) are large, semiaquatic rodents of the Northern Hemisphere. There are two existing species: the North American beaver (Castor canadensis) and the Eurasian beaver (C. fiber). Beavers are the second-largest living rodents, …

The North American beaver was named the Oregon state animal in 1969, so Oregon’s nickname is the “Beaver State.” Beavers are unique from other species since they create dams, which modifies the environment by building up water and preventing soil erosion.

When the beaver is under water, its nose and ears close up and a special membrane covers its eyes. It has dark brown fur on its back and sides and lighter brown fur on its chest and belly. The beaver waterproofs its thick fur by coating it with castoreum, an oily …