Jordi Chias / Sea star (Labidiaster radiosus) Antarctic Peninsula, Antarctica.

Norbert Wu / Antarctic Sun Starfish (Labidiaster annulatus), Palmer Station, Antarctic Peninsula, Antarctica

Norbert Wu / Brittle Star (Ophionotus victoriae) trying to defend itself against Antarctic Sun Starfish (Labidiaster annulatus), Palmer Station, Antarctic Peninsula, Antarctica

Norbert Wu / Antarctic Sun Starfish (Labidiaster annulatus), Hydrozoan (Candelabrum penola), and Sponge (Mycale acerata) below kelp forest, Palmer Station, Antarctic Peninsula, Antarctica

Luciano Candisani / Antarctic Sun Starfish (Labidiaster annulatus), Admiralty Bay, King George Island, South Shetland Islands, Antarctica

Franco Banfi / Estrella sea star (Labidiaster annulatus) outstretched on a pink rock, Antarctic Peninsula, Antarctica, Southern Ocean.

Franco Banfi / Estrella sea star (Labidiaster annulatus) outstretched on kelp, Antarctic Peninsula, Antarctica, Southern Ocean.