homo sapiens
the polar bear doesnt live in Antarctica it lives in the northen hemisphere
Antarctic cod are often eaten by seals and orcas. These fish are also called the Antarctic toothfish and are eaten primarily by people.
There is no such animal as an Antarctic Wolf.
One type of Blue Whale the B. m. intermedia, the Antarctic blue whale, is considered an Antarctic regional -- sea-based, animal.
From Wikipedia:"The gut of E. superba can often be seen shining green through the animal's transparent skin, an indication that this species feeds predominantly on phytoplankton."
They eat eskimos. They are canibals. The ones who are vegetarian starve.
No animal lives on the Antarctic continent.
There is no animal that could get eaten and then be alive the next day because when something is eaten it dies.
The chemical energy of the animal who was eaten is passed on to the animal who ate the other animal.
Penguins
From the video of an Antarctic Tern preening, it does appear that this animal has webbed feet.
Oh, dude, you're asking about the food chain in Antarctica? That's like asking what toppings go on a pizza. Anyway, to answer your question, animals like Antarctic hair grass are eaten by herbivores such as Antarctic pearlwort and Antarctic springtail. So yeah, it's like a whole buffet down there in the icy grasslands.