The ears of otters protect from water via ear-flaps.

“Among aquatic mammals such as the otter, the ear-flap can be pressed down to close the ear to water.” (Foy and Oxford Scientific Films 1982:167)

Foy S, Oxford Scientific Films. The Grand Design: Form and Colour in Animals. Lingfield, Surrey, U.K.: BLA Publishing Limited for J. M. Dent & Sons Ltd, London; 1982. 238 p.

Last Updated August 18, 2016