noun

blubber

BLUB-er/ˈblʌbər/

A thick layer of body fat, especially in whales and other marine mammals.

The seal has a thick layer of blubber beneath its skin.

A seal in side view with a small, clean illustrative cutaway revealing a thick pale layer of blubber directly beneath its skin and above its muscle.
Etymology

Middle English blober meant a bubble or foaming water and was probably imitative of bubbling sounds. The word was later used for whale oil before coming to name the thick fat of marine mammals.

In context

Auralis12:55
Whales cement this challenge with blubber, a thick layer of fat under their skin.
The Wonder of Whales | For Sleep Documentary (No AI Used)

More examples

  • The whale relies on its blubber for energy during migration.
  • Blubber helps walruses stay warm in icy water.
  • Workers once boiled whale blubber to extract oil.

Forms

blubber

Similar words

fat
A broader term for fatty tissue throughout an animal's body.
adipose tissue
The anatomical term for fat tissue, not specifically marine insulation.