'This tusked pinniped has air sacs in its neck enabling it to keep its head above water while sleeping'
Walrus
SCIENCE & NATURE: This tusked pinniped has air sacs in its neck enabling it to keep its head above water while sleeping
This tusked pinniped has air sacs in its neck enabling it to keep its head above water while sleeping
This tusked pinniped has air sacs in its neck enabling it to keep its head above water while sleeping
SCIENCE & NATURE
Walrus
SCIENCE & NATURE