Mark MacEwen / King penguin (Aptenodytes patagonicus) group walking past Southern elephant seal (Mirounga leonina) colony, mountains in background. St Andrews Bay, South Georgia. October 2017.

Mark MacEwen / Southern elephant seal (Mirounga leonina), two females sleeping. St Andrews Bay, South Georgia. October.

Ben Cranke / King Penguins (Aptenodytes patagonicus) approached by an Antarctic Fur Seal (Arctocephalus gazella). A few pecks from the penguins caused the seal to retreat. Southern elephant seal (Mirounga leonina)...

Alex Hyde / Southern Elephant Seal bull (Mirounga leonina) close up portrait, King Haakon Bay, South Georgia. November.

Alex Hyde / Southern Elephant Seals (Mirounga leonina) pup with mother. King Haakon Bay, South Georgia. November.

Alex Hyde / Colonies of King penguins (Aptenodytes patagonicus) and Southern Elephant Seals (Mirounga leonina) on beach at St. Andrews Bay, South Georgia. November.

Peter Bassett / Male Southern elephant seal (Mirounga leonina) shifting position on a beach, surrounded by females, almost crushing a pup, Gold Harbour, South Georgia.Gold Harbour, South Georgia.

Fred Olivier / Close-up of a dominant male Southern elephant seal (Mirounga leonina) calling, Macquarie Island, Sub-Antarctic Australia.

Roland Seitre / Blackish cinclodes (Cinclode fuligineux) on beach with Southern Elephant-Seal (Mirounga leonina). This species feeds on dead skin of the seal. Falklands Islands.

Chris & Monique Fallows / King penguin (Aptenodytes patagonicus) and Southern elephant seal (Mirounga leonina) colony at sunrise. Grytviken, South Georgia Island.

Kathryn Jeffs / Southern elephant seal pup (Mirounga leonina), Antarctica, February, Taken on location for BBC Frozen Planet series

Chadden Hunter / Southern elephant seal (Mirounga leonina) close up of sleeping individual, South Georgia. Taken on location for BBC Frozen Planet series, 2008

Troels Jacobsen/Arcticphoto / Portrait of a Southern Elephant Seal (Mirounga leonina) in water. South Georgia.

Fred Olivier / Southern elephant seal (Mirounga leonina) portrait with seaweed, Macquarie Island, Southern Atlantic, Australian Antarctica, November

Pete Oxford / Southern Giant Petrels (Macronectes giganteus) feeding on the carcass of a Southern Elephant seal bull, killed by Killer whales. Sea Lion Island. South of mainland east Falkland Island. Falkland Islan...

Michael Pitts / Southern giant petrel (Macronectes giganteus) head covered in blood feeding on carcass of an Elephant seal pup, with a penguin colony in the distance, St Andrews Bay, South Georgia

Michael Pitts / Southern elephant seal {Mirounga leonina} defense behaviour, Sealion island, Falkland Islands

Michael Pitts / Southern elephant seal {Mirounga leonina} juvenile swimming underwater, Sealion island, Falkland Islands

Edwin Giesbers / Gentoo Penguin {Pygoscelis papua} and Southern Elephant Seals {Mirounga leonina} Antarctica

Gabriel Rojo / Southern elephant seal pup underwater {Mirounga leonina} Valdez peninsula, Argentina

Gabriel Rojo / Southern elephant seal digging into beach {Mirounga leonina} Valdez peninsula, Argentina

Gabriel Rojo / Southern elephant seal on beach {Mirounga leonina} Valdez peninsula, Argentina

Gabriel Rojo / Southern elephant seal resting {Mirounga leonina} Valdez peninsula, Argentina

Gabriel Rojo / Southern elephant seal {Mirounga leonina} Valdez peninsula, Argentina

Doug Allan / Southern elephant seal pair courtship {Mirounga leonina} Antarctica

Doug Allan / Southern elephant seal pair courtship {Mirounga leonina} Antarctica. NB Large difference in size of male and female.

Staffan Widstrand / Southern elephant seal {Mirounga leonina} female defensive threat display, Valdez, Argentina

Staffan Widstrand / Southern elephant seal {Mirounga leonina} female portrait. Valdez, Argentina

Martha Holmes / Southern elephant seal {Mirounga leonina} close-up of hand-like flipper scratching, Falkland Islands.

Peter Bassett / Aggressive bull elephant seal and penguins on beach at St Andrews Bay, South Georgia

Pete Oxford / Southern Elephant Seal moulting, East Falkland Islands (Mirounga leonina)

Agustin Esmoris / Southern Elephant Seal (Mirounga leonina) male calling and bleeding after fight, Puerto Madryn, Argentina

Heike Odermatt / Southern Elephant Seal (Mirounga leonina) pups, Sea Lion Island, Falkland Islands

Yva Momatiuk & John Eastcott / Southern Elephant Seal (Mirounga leonina) pups, fat and docile weaners stay together for company and reassurance, St. Andrews Bay, South Georgia Island

Yva Momatiuk & John Eastcott / Southern Elephant Seal (Mirounga leonina) bull roaring at intruder on beach during breeding season, Gold Harbour, South Georgia Island

Hiroya Minakuchi / Southern Elephant Seal (Mirounga leonina) mother and pup, Falkland Islands

Tui De Roy / Southern Elephant Seal (Mirounga leonina) juveniles lounging in tussock grass, Sea Lion Island, Falkland Islands

Mark MacEwen / Cameraman Mark MacEwen filming Southern elephant seal (Mirounga leonina) with ready rig, King penguin (Aptenodytes patagonicus) colony and mountains in background. Taken on location for BBC Seven Worl...

Mark MacEwen / Southern elephant seal (Mirounga leonina) bull on beach with mouth open in aggression towards filming by cameraman Mark MacEwen. Taken on location for BBC Seven Worlds One Planet series. South Georgia...

Mark MacEwen / Southern elephant seal (Mirounga leonina) and King penguin (Aptenodytes patagonicus) colonies on beach, aerial view. St Andrews Bay, South Georgia. October 2017.

Mark MacEwen / Southern elephant seal (Mirounga leonina) colony on beach with King penguin (Aptenodytes patagonicus) colony beyond. Aerial view, St Andrews Bay, South Georgia. October 2017.

Mark MacEwen / Southern elephant seal (Mirounga leonina) breeding colony on beach with King penguin (Aptenodytes patagonicus) colony inland, mountains in background. Aerial view, St Andrews Bay, South Georgia. Octob...

Mark MacEwen / Southern elephant seal (Mirounga leonina) breeding colony on beach, adults with pups, aerial view. St Andrews Bay, South Georgia. October 2017.

Mark MacEwen / Southern elephant seal (Mirounga leonina) bull / beach master vocalising. St Andrews Bay, South Georgia. October.

Mark MacEwen / King penguin (Aptenodytes patagonicus) walking on beach through Southern elephant seal (Mirounga leonina) colony. St Andrews Bay, South Georgia. October.

Mark MacEwen / King penguin (Aptenodytes patagonicus) walking past Southern elephant seal (Mirounga leonina) sleeping within colony. St Andrews Bay, South Georgia. October.

Mark MacEwen / Southern elephant seal (Mirounga leonina), two pups in water amongst King penguin (Aptenodytes patagonicus) feathers washed down from breeding colony. St Andrews Bay, South Georgia. October.

Mark MacEwen / Southern elephant seal (Mirounga leonina) beach master / bull roaring, portrait. St Andrews Bay, South Georgia. October.