Why don't marine mammals freeze to death?

  1. Kevin Peter profile image71
    Kevin Peterposted 4 years ago

    Why don't marine mammals freeze  to death?

    I don't think that all marine mammals have fur on their body.Eg: seals, sealions, whales etc. Then how do they survive?

  2. profile image52
    Heddy Jposted 4 years ago

    They have thick layers of fat under their skin.  Lipids freeze at much lower temperatures and work great as insulation for the water-based tissues inside. Btw, seals and such do have fur, but it's really the fat that keeps them warm.