Phocidae
- Cystophora
- Erignathus
- Halichoerus
- Histriophoca
- Hydrurga
- Leptonychotes
- Lobodon
- Mirounga
- Monachus
- Neomonachus
- Ommatophoca
- Pagophilus
- Gray seal Halichoerus grypus
A seal of North Atlantic coasts, with a long, prominent nose especially noticeable in adult males.
- Ringed seal Pusa hispida
A small seal of the seasonally ice-covered seas around the Arctic. It keeps breathing holes open in the ice.
- Mediterranean Monk Seal Monachus monachus
A rare seal found in the Mediterranean and along northwest Africa; it feeds on fish, octopus and other prey.
- Harp seal Pagophilus groenlandicus
A seal of cold North Atlantic and Arctic waters. It gathers on pack ice during breeding and molting seasons.
- Leopard seal Hydrurga leptonyx
A seal of the pack ice around Antarctica. Usually solitary, it eats fish, penguins, krill and other prey.
- Southern elephant seal Mirounga leonina
A seal of the seas around Antarctica that dives deep to find food.
- Hooded seal Cystophora cristata
A seal of the cold North Atlantic and Arctic waters, the mature male can inflate a pouch on its nose.
- Bearded Seal Erignathus barbatus
The bearded seal lives in shallow Arctic and subarctic seas where seasonal sea ice forms.
- Harbor seal Phoca vitulina
A rounded head and short front flippers distinguish this seal. It has ears, but no external ear flaps.
- Baikal Seal Pusa sibirica
A freshwater seal found only in Lake Baikal, with occasional records in rivers connected to the lake.
- Spotted seal Phoca largha
A spotted seal of the North Pacific and southern Arctic. It lives around seasonal sea ice.
- Caspian Seal Pusa caspica
The Caspian seal lives only in the Caspian Sea. Newborn pups have a white coat, and many are born on winter ice in the north.
