Omnivores - sea turtles, blue crabs, flamingos all live in the in the Atlantic ocean
A manatee does.
Nearly all fox species are omnivores.
Bandicoots are a group of small to medium sized marsupial omnivores found in northern Australia and New Guinea where they live in rainforests. The desert bandicoot is an extinct bandicoot of the arid country in the center of Australia.
shark
Opossums
fish
Ducks are omnivores that reside on or about wetlands (swamps) and oceans.
some types of birds
hyenas and bush pigs
the wet ones
polar bears.