Adult crabeater seal (Lobodon carcinophaga) hauled out on an ice floe near Useful Island near the Antarctic Peninsula. This is the most abundant pinniped in the world, with current population estimates ranging from 25 to 50 million animals.

An adult leopard seal (Hydrurga leptonyx) hauled out among the ice floes at Port Arthur in the caldera of Deception Island in the South Shetland Islands near the Antarctic peninsula, southern ocean.

A mother and nursing newborn pup leopard seal (Hydrurga leptonyx) hauled out on ice floes on the western side of the Antarctic peninsula, southern ocean. This is the only pinniped known to have attacked and killed a human snorkeler in Antarctica.

An adult leopard seal (Hydrurga leptonyx) hauled out among the ice floes at Port Arthur in the caldera of Deception Island in the South Shetland Islands near the Antarctic peninsula, southern ocean. The Lindblad expedition ship National Geographic Endeavo

A mother and nursing newborn pup leopard seal (Hydrurga leptonyx) hauled out on ice floes on the western side of the Antarctic peninsula, southern ocean. This is the only pinniped known to have attacked and killed a human snorkeler in Antarctica.

A mother and newborn pup leopard seal (Hydrurga leptonyx) hauled out on ice floes on the western side of the Antarctic peninsula, southern ocean. This is the only pinniped known to have attacked and killed a human snorkeler in Antarctica.

A mother and newborn pup leopard seal (Hydrurga leptonyx) hauled out on ice floes on the western side of the Antarctic peninsula, southern ocean. This is the only pinniped known to have attacked and killed a human snorkeler in Antarctica.

An adult Weddell seal (Leptonychotes weddellii) hauled out on an ice floe in the Weddell Sea near the Antarctic Peninsula.