2759b964_ference____Aquarium_of_the_Bay__Sea_Otters
[River Otters] Have little paws and can run quickly on land [Sea Otters] 
Have wide webbed feet, and are really awkward on land, like they’re wearing SCUBA flippers
River Otters Versus Sea Otters: What’s the Difference? | Aquarium of the Bay
Sea Otters