marine mammal

Definitions

A mammal which lives partly or wholly in the ocean, or at least is heavily dependent on the ocean for its lifestyle; such as cetaceans, sirenians, seals, the sea otter or the polar bear.

Equivalents

Examples

“The influence⟳ of the temperature of the Gulf-stream upon animal life in the ocean is very curious. The whale so sedulously shuns its warm waters, as almost to indicate⟳ their track by its absence ; while yet abundantly found on each side of it. The physical reasons are doubtless the same which prevent⟳ this great marine mammal from ever crossing the equator from one hemisphere to the other — a fact now well ascertained.”

CEFR level