Yes they are
I believe the beaver possibly has the most dense fur.
The fur of a sea otter grows so closely together, that it is waterproof. It also traps tiny pockets of air, and the air acts as an insulator, helping to keep the otter from losing heat into the water.
Air trapped in their fur keeps them warm
Air trapped in their fur keeps them warm
they want money. so they sell the sea otter pelts.
yes
Bleep
by far polar bear because the live in much colder weather then sea otter
Thick fur
becausepeople use them for fur hats and used to trade there skin
The obvious answer is - it's fur gets wet !
yes it is waterproof. they coat their fur with castoreum to make it waterproof.