They can get eaten by aligators and vultures like in bob the builder him and Wendy were having fun outside and vultures eate them. I picture all the other people as otters.
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Sea otters are eaten by orcas (killer whales.)
algae can be eaten by sea otters Chinese people also
eel, trout, herons, mink, otters, snakes, and people
People, otters, seabirds, turtles, seals and racoons to name but a few.
baby otters are eaten by owls foxes and alligators. People also kill them for their pelts
Otters can be eaten by white sharks, eagles, but there worst enemies are sadly humans.
sea urchins eat eaten by crabs, sunflower stars, snails, sea otters some birds, some fish and people...
oyster drill (a snail), starfish, oyster catchers (bird), seagulls, bears, otters, walrus, gray whales.
As others have written, killer whales and sharks are the biggest threat to sea otters of all sizes if they are in the ocean. The younger sea otters can also be attacked on the water surface by bald eagles. While on land, all sea otters may be eaten by bears and possibly even coyotes.
Piranhas are eaten by Otters, bigger fish like sharks and also dolphins and crocodiles eat piranhas :) hope i helped!!
The plural of otter is otters.