Fur seals

Description

Aquatic mammals, birds and possibly some reptiles have the ability to sleep with one half of their brain active with the other half asleep. In terrestrial mammals both sides of the brain sleep at the same. Fur Seals, however, have developed both forms of sleeping, one for the water and one for land.

Runtime

1 min

Series

Subjects

Genre

Date of Publication

2011

Database

Alexander Street

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