to keep out the water. the oily fur helps keep warmth in and water out!
sea otters do have hollow fur to help them float... so yes sea otters have hollow hair.
They have thick hair because they have layers of hair(:
because it wanted to grow thick
Their oily skin keeps them warm in the cold waters.Also they have thick fur to keep warm.
it is very thick and it keeps them warm. Back in the 1700's over 15,000 sea otters were killed for there coats. And only 50 managed to escape.
Sea otters are covered in an extremely dense coat of fur, with 1,000,000 strands of hair per square inch (the densest of any animal on earth). Two different kinds of hair make up this coat: short underhair, which retains air and insulates the otter, and long guardhair, which prevent the ocean water from leaking into the underhair. It was because of this luxurious pelt that sea otters were so intensely hunted in the past--which was the primary contribution to today's decimated population of sea otters.
Sea otters are very flexible so they can reach every part of their body, kinda like a dog and a cat
Sea otters are adapted to keep warm by its thick and dense fur. It has two layers of fur; one a water proof guard layer, and then a shorter layer of fur underneath. Unlike most marine mammals, they do not use blubber to keep them warm. So they use their fur instead.
so they can eat its really true
To anchor themselves so they don't drift out to sea while sleeping
Otters have webbed feet so they can swim better than not having webbed feet.
so they dont get cold.