<P> The sea otter ( Enhydra lutris ) is a marine mammal native to the coasts of the northern and eastern North Pacific Ocean . Adult sea otters typically weigh between 14 and 45 kg ( 31 and 99 lb ) , making them the heaviest members of the weasel family , but among the smallest marine mammals . Unlike most marine mammals , the sea otter 's primary form of insulation is an exceptionally thick coat of fur , the densest in the animal kingdom . Although it can walk on land , the sea otter is capable of living exclusively in the ocean . </P>
<P> The sea otter ( Enhydra lutris ) is a marine mammal native to the coasts of the northern and eastern North Pacific Ocean . Adult sea otters typically weigh between 14 and 45 kg ( 31 and 99 lb ) , making them the heaviest members of the weasel family , but among the smallest marine mammals . Unlike most marine mammals , the sea otter 's primary form of insulation is an exceptionally thick coat of fur , the densest in the animal kingdom . Although it can walk on land , the sea otter is capable of living exclusively in the ocean . </P>
what is the average size of a sea otter
what is the average size of a sea otter
between 14 and 45 kg ( 31 and 99 lb )
between 14 and 45 kg ( 31 and 99 lb )