These sea otters do more than sleep while floating on their backs. Endangered sea otters protect kelp beds off the Olympic Peninsula by preying on small undersea life, which would otherwise overpopulate. | National Geographic TV

8.2K views · 512 reactions | 簾 North American river otters are considered a keystone species, which means other species in the same habitat largely depend on the existence of river otters. They are a top predator and their presence also reflects the health of the ecosystem around them. Find river otters, and you will find healthy streams and rivers.  See them at American Trail! | Smithsonian’s National Zoo and Conservation Biology Institute | Facebook

Endangered sea otters protect the kelp beds by preying on small undersea life, which would otherwise overpopulate. #WildlifeWednesday | National Geographic TV

DAILY DOSE OF CUTENESS! This baby otter ventured into the Arizona Canal and when he was on his last breath and completed starved, Salt River Project workers rescued him. Now, he's happy at his new home, Out of Africa Wildlife Park in Camp Verde! MORE: http://bit.ly/2p7prQK | FOX 10 Phoenix