Dragonflies mating, Santa Cruz Island, Galapagos Islands, Ecuador, South America

King penguins (Aptenodytes patagonicus) at breeding and nesting colony at Right Whale Bay, South Georgia, Polar Regions

Southern elephant seal (Mirounga leonina) mating behavior on South Georgia Island, Southern Ocean

Northern giant petrels (Macronectes halli) fighting over the scavenging rights to a dead fur seal pup at St. Andrews Bay, South Georgia

Adult bull southern elephant seals (Mirounga leonina) fighting for breeding grounds on South Georgia Island, Southern Ocean

Southern elephant seal (Mirounga leonina), beachmaster bull with female harem, Right Whale Bay, South Georgia, UK Overseas Protectorate, Polar Regions

Adult black-legged kittiwake (Rissa tridactyla) in combat with a second kittiwake near Alexander Island, Franz Josef Land, Russia, Arctic Ocean, Eurasia

Antarctic fur seal bulls (Arctocephalus gazella) fighting for mating territory on South Georgia, Southern Ocean, Polar Regions

Northern giant petrels (Macronectes halli) fighting over the scavenging rights to a dead elephant seal pup at Royal Harbor, South Georgia

Southern elephant seal (Mirounga leonina) bull holding female down for mating, Right Whale Bay, South Georgia, UK Overseas Protectorate, Polar Regions

Northern giant petrels (Macronectes halli) fighting over the scavenging rights to a dead elephant seal pup at Royal Harbor, South Georgia

Southern elephant seal (Mirounga leonina) bull holding female down for mating, Right Whale Bay, South Georgia, UK Overseas Protectorate, Polar Regions

Aerial view of Southern right whales (Balaena glacialis australis). Male courting a female in shallow water. Cape Peninsular, South Africa (rr)

Aerial view of Southern right whales (Balaena glacialis australis). Males courting a female in shallow water. Cape Peninsular, South Africa (rr)

Aerial view of Northern right whales (Balaena glacialis glacialis) in courtship. Gulf of Maine, USA. (rr)

Aerial view of Northern right whales (Balaena glacialis glacialis). Males courting a female. Gulf of Maine, USA. (rr)

Aerial view of Northern right whales (Balaena glacialis glacialis). Males courting a female. Gulf of Maine, USA. (rr)