Eats fur seals, sea lions, dolphins, humpback whales, and large or medium sized fish. They don't have predators

Eats medium to large sized fish, sea lions, fur seals, sea turtles, flightless cormorants, and iguanas. They don't have predators

They eat fish and squid and are eaten by killer whaels

They eat fish and squid and are eaten by sharks and killer whales

They eat fish and are eaten by sharks and killer whales

They eat marine iguanas and other birds and have no predators

They eat fish and are eaten by sharks, fur seals, sea lions, and sea birds

They eat small fish, crabs and shellfish and are eaten by groupers

They eat smaller fish and are eaten by hawks

They eat small to medium sized fish, crabs, shrimp, and lobster and are eaten by shark

They eat school fish or crustaceans, while being eaten by sharks and occasionally fur seals or sea lions

They eat small fish and zooplankton and are eaten by the killer whale

They eat sea urchins, algae, coral, crabs, and starfish and are eaten by bigger fish

They eat ulva, jellyfish, and crustaceans, and are eaten by sharks

They eat small fish, mollusks, clams, and worms and are eaten by nothing

They eat zooplankton and are eaten by birds

They eat zooplankton and are eaten by fish and urchins

They eat seaweed and are eaten by hawks and sharks

They eat algae and are eaten by birds and fish

They eat algae and are eaten by larger fish and sharks

They eat algae and are eaten by triggerfish

They eat various types of algae and are eaten by larger fish and seabirds

Feed on phytoplankton and are eaten by penguins, birds, fish, and whales

Feed on algae and are eaten by predatory fish

Eat small fish, phytoplankton, and zooplankton, and are eaten by large fish and sea turtles

Eaten by marine iguana, turtles, damselfish, and other fish

Abundant but most organisms avoiding eat it because of toxic substances

Provide food for zooplankton and other larger organisms

Eaten by damselfish, surgeon fish, parrot fish, sea stars, snails, and occasionally marine iguanas