Doug Allan / Killer Whales (Orcinus orca) spy-hopping to observe Weddell Seal (Leptonychotes weddellii) in preparation to knock it from the ice by creating a wave. Marguerite Bay, Antarctic Peninsula, summer. Free...

Kathryn Jeffs / Southern Type B Killer whales (Orcinus orca) hunting Weddell seal (Leptonychotes weddelli) spyhopping to assess where seal is on ice floe and to intimidate, Antarctica. Taken on location for BBC Froz...

Kathryn Jeffs / Southern Type B Killer whales (Orcinus orca) hunting Weddell seal (Leptonychotes weddelli) using coordinated wave washing technique, Antarctica. Taken on location for BBC Frozen Planet series, Januar...

Kathryn Jeffs / Southern Type B Killer whale (Orcinus orca) hunting Weddell seal (Leptonychotes weddelli) spyhopping to assess where seal is on ice, whilst Humpback whale (Megaptera novaeangliae) surfaces nearby, Ant...

Kathryn Jeffs / Southern Type B Killer whale (Orcinus orca) hunting Weddell seal (Leptonychotes weddelli), Antarctica. Taken on location for BBC Frozen Planet series, January

Kathryn Jeffs / Southern Type B Killer whales (Orcinus orca) hunting Weddell seal (Leptonychotes weddelli) using coordinated wave washing technique, Antarctica. Taken on location for BBC Frozen Planet series, Januar...

Doug Allan / Weddell seal {Leptonychotes weddelli} adult and pup swimming under ice, Antarctica

Doug Allan / Weddell seal swimming under ice {Leptonychotes weddelli} Antarctica

Doug Allan / Weddell seal swims under ice {Leptonychotes weddelli} Antarctica. Weddell seals can dive to a depth of 700m!

Doug Allan / Weddell seal with pup surfacing at breathing hole in ice {Leptonychotes weddelli} Antarctica

David Tipling / Weddell seal pup {Leptonychotes weddelli} on ice Weddell Sea, Antarctica

Pascal Kobeh / Weddell seal (Leptonychotes weddelli) resting on land, Antarctic Peninsula.