Penguins are part of the marine food chain. Today, they dine on fish, squid and krill. Different species have different preferences, and diets may also change between breeding and non-breeding months when some penguins change the average distance they travel from shore.Click to see full answer. Also asked, what is the food chain in Antarctica?In the Antarctic food chain krill are primary consumers and baleen whales, penguins, seals and many kinds of fish and other birds are secondary consumers when feeding on krill. Many animals are a mixture of primary, secondary, tertiary (3rd) and quaternary (4th) consumers as they eat a variety of prey.Secondly, what does a penguin eat? Penguins eat seafood. Their main diet is fish, though they’ll also eat squid, small shrimplike animals called “krill” (see photo to the right) and crustaceans. Hereof, is a penguin a primary consumer? Crabs eat the seaweed so they are the primary consumers in this food chain. Squid gobble up the crab, making them the secondary consumers. Penguins and seals are tertiary consumers because they both eat up the squid.What is the blue whale food chain? Carnivorous