Great white shark (Carcharodon carcharias), Seal Island, False Bay, Simonstown, Western Cape, South Africa, Africa

Crabeater seal (Lobodon carcinophaga) showing teeth while resting on ice floe in Paradise Bay, Antarctica, Polar Regions

Guadalupe fur seals (Arctocephalus townsendi), at new haul out on Las Animas Island, Baja California Sur, Sea of Cortez, Mexico, North America

Guadalupe fur seal (Arctocephalus townsendi), underwater on Las Animas Island, Baja California Sur, Sea of Cortez, Mexico, North America

Antarctic fur seal bull (Arctocephalus gazella) on South Georgia, Southern Ocean, Polar Regions

Adult bull southern elephant seal (Mirounga leonina), skull on display at the Natural History Museum in Stanley, Falklands, South America

Guadalupe fur seal (Arctocephalus townsendi), underwater on Las Animas Island, Baja California Sur, Sea of Cortez, Mexico, North America

Southern Elephant Seal; Mirounga leonina, on Prion Island, South Georgia, Antarctica, yawning,

South american fur seal (arctocephalus australis) native of south america and the falkland islands (captive bristol zoo)

Antarctic fur seal (arctocephalus gazella) fortuna bay, south georgia, portrait of bull seal showing teeth.

Hungry California harbour seal (Zalophus californianus) with mouth wide open, Sea Life Park, Oahu Hawaii, United States of America, Pacific

Southern elephant seal (Mirounga leonina) tooth found on the beach at South Georgia in the Southern Ocean

Weddell seal (Leptonychotes weddellii) skull (note the cusped teeth) on the beach near the Antarctic Peninsula. Weddell seals used to be hunted as food for dog sled teams.

Young Galapagos fur seal (Arctocephalus galapagoensis) on Isabela Island in the Galapagos Island Group, Ecuador. This pinniped is endemic to the Galapagos Islands only. Pacific Ocean.

A mother and newborn pup leopard seal (Hydrurga leptonyx) hauled out on ice floes on the western side of the Antarctic peninsula

Fighting between two Grey Seal (Halichoerus grypus) females over beach access, Pentland Firth, Scotland.

yawning horsehead seal

Leopard seal (Hydrurga leptonyx) on the beach of Ulva Island in New Zealand wich is "predatory free" because cleared of introduced mammals predators. The Leopard seal is fairly regular in the area and it was really amazing to observe it on a beach and not in the middle of the Antarctic ice.

Crabeater Seal (Lobodon carcinophaga), resting on ice floe. Antarctica, Antarctic Peninsula, Detaille Island

Portrait of Grey Seal (Halichoerus grypus), Lincolnshire, England