Lay on your back and eat. Rescued Sea Otter Munches His Clams This is Walter, a sea otter with a hearty appetite. He was rescued in Tofino, British Columbia in October 2013 after being shot. Walter currently resides at the Vancouver Aquarium Marine Mammal Rescue Centre where he is undergoing rehabilitation.Here, he's getting fed clams and shrimp. They also eat mussels, chitons, snails, prawns, crabs, abalone, sea urchins, squid, sea star arms and sometimes fishes.Walter is not unique in using touch to sense where the food is -- sea otters feel for food along the ocean bottom with their sensitive front paws. But this sense is especially important for Walter because he is now blind due to his injury.Sea otters, unlike other marine mammals, don't have a layer of blubber. Instead, they have dense fur and eat up to 30% of their body weight in food every day just to create energy to keep warm.