Yes, the sea turtles have enemies. One of there biggest is the Tiger Shark. Others include Fishes, dogs, seabirds, raccoon's and ghost crabs which are known to eat the sea turtles eggs and baby turtles.
The excrement of seabirds used for fertilizer is guano.
The salmon has many enemies. In the river it gets eaten by birds, frogs, bears, other fish and of course man. Man also hunts in the ocean along with dolphins, sea lion, seals, sharks, seabirds, whales and other bigger fish.
Seabirds live at sea, although they do visit coastlines to breed.
Seabirds find their food source -- and warmth -- in the ocean waters where they make their homes.
The are seabirds that eat clam and fish.
Seabirds in that geography include Skua, Albatross, Tern, Penguin and others.
There are many types of seabirds: Albatross, Auk, Booby, Frigatebird, Fulmar, Gannet, Murre, and Penguin.
Adults have few predators, but many seabirds eat the chicks of other seabirds and fulmar chicks are no exception.
They eat mackeral and krill
fish
Sharks, big fish, eagles, and hawks eat all different kinds of seabirds.