Why do seals and sea lions have thick blubber?
Quick Answer
Blubber insulates their bodies in cold water and stores energy for times when food is scarce. It also helps with buoyancy and protects internal organs.
The Full Story
Marine mammals lose heat quickly in cold water, so seals and sea lions rely on a thick layer of fat called blubber. This layer acts as insulation, reducing heat loss far more effectively than a thin coat of fur alone. Blubber also stores energy that can be used during fasting, migration, or breeding seasons when feeding is limited. In addition, it helps streamline the body and can provide some protection from injury. This is a key adaptation for mammals living in icy ocean environments.
Key Facts
YouTube Angle
Suggested video title for this topic:
"Why cold-water mammals wear a fat suit"
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