All the otters of waters

The difference between sea otter ad  river otter are that river otters are much smaller than sea otters.  Both species spend most of  their time in water but only river otters are the only ones who can walk on land, they have  long tails to hold their balance while walking on land.

Sea otters

Otters are great creatures they are also mammals like whales. They breath air but they do not have blow holes they have nostrils. They are the only marine mammals that have fur. They have to groom (groom means clean  ) themselves so they wont drown.