Jasper Doest / Common Seal (Phoca vitulina) on beach, Donna Nook Nature Reserve, England

Michio Hoshino / Harp Seal (Phoca groenlandicus) pup lying in the snow

Suzi Eszterhas / Harbor Seal (Phoca vitulina) pup in shallows, Elkhorn Slough, California

Mitsuaki Iwago / Harp Seal (Phoca groenlandicus) resting on snow, Gulf of St Lawrence, Canada

Michio Hoshino / Harp Seal (Phoca groenlandicus) mother surfacing at ice hole to tend to her newborn pup, Gulf of St Lawrence, Canada

Norbert Wu / Harbor Seal (Phoca vitulina) swimming underwater, Monterey, California

Ingo Arndt / Common Seal (Phoca vitulina) on beach, Europe

Konrad Wothe / Baikal Seal (Phoca sibirica) resting on rock, Zabaikalsky National Park, Ushkany Islands, Lake Baikal, Russia

Konrad Wothe / Baikal Seal (Phoca sibirica) resting on rock with flipper raised, Zabaikalsky National Park, Ushkany Islands, Lake Baikal, Russia

Michio Hoshino / Harp Seal (Phoca groenlandicus) pup, Gulf of St Lawrence, Canada

Tui De Roy / Ringed Seal (Phoca hispida) surfacing in brash ice, Svalbard Archipelago, Norwegian Arctic

Mitsuaki Iwago / Harp Seal (Phoca groenlandicus) pup portrait, Gulf of St Lawrence, Canada

Tui De Roy / Ringed Seal (Phoca hispida) surfacing in brash ice, Svalbard, Norwegian Arctic

Mitsuaki Iwago / Harp Seal (Phoca groenlandicus) pup sleeping, Gulf of St Lawrence, Canada

Flip Nicklin / Ringed Seal (Phoca hispida) at breathing hole, Arctic

Michio Hoshino / Harp Seal (Phoca groenlandicus) portrait, Gulf of St Lawrence, Canada

Michio Hoshino / Harp Seal (Phoca groenlandicus) at breathing hole with newborn in background, Gulf of St Lawrence, Canada

Michio Hoshino / Harp Seal (Phoca groenlandicus) surfacing at crack in ice near pup, Gulf of St Lawrence, Canada

Michio Hoshino / Harp Seal (Phoca groenlandicus) pup, Gulf of St Lawrence, Canada

Michio Hoshino / Harp Seal (Phoca groenlandicus) mother and pup, Gulf of St Lawrence, Canada

Michio Hoshino / Harp Seal (Phoca groenlandicus) pup camouflaged against ice field, Gulf of St Lawrence, Canada

Michio Hoshino / Harp Seal (Phoca groenlandicus) pup portrait, Gulf of St Lawrence, Canada

Michio Hoshino / Harp Seal (Phoca groenlandicus) parent with pup, Gulf of St Lawrence, Canada

Michio Hoshino / Harp Seal (Phoca groenlandicus) pup portrait, Gulf of St Lawrence, Canada

Michio Hoshino / Harp Seal (Phoca groenlandicus) pup, Gulf of St Lawrence, Canada

Konrad Wothe / Harbor Seal (Phoca vitulina) mother and pup on ice floe, Alaska

Konrad Wothe / Baikal Seal (Phoca sibirica), Lake Baikal, Zabaikalsky National Park, Russia

Matthias Breiter / Harbor Seal (Phoca vitulina) group hauled out on rock, Mussel Inlet, British Columbia, Canada

Matthias Breiter / Harbor Seal (Phoca vitulina) on rock, Howe Sound, Canada

Matthias Breiter / Harbor Seal (Phoca vitulina) on rock in Howe Sound, Canada

Matthias Breiter / Harbor Seal (Phoca vitulina) group hauled out on rocks, Howe Sound, Canada

Matthias Breiter / Harbor Seal (Phoca vitulina) hunting Pink Salmon (Oncorhynchus gorbuscha), Ketchikan, Alaska

Matthias Breiter / Harbor Seal (Phoca vitulina) swimming near Juneau, Alaska

Matthias Breiter / Harbor Seal (Phoca vitulina) hunting school of Pink Salmon (Oncorhynchus gorbuscha), Ketchikan, Alaska

Matthias Breiter / Harbor Seal (Phoca vitulina) on ice floe, Sawyer Glacier, Alaska

Matthias Breiter / Harbor Seal (Phoca vitulina) group hauled out on ice floes below the terminus of Hubbard Glacier, Alaska

Matthias Breiter / Harbor Seal (Phoca vitulina) hauled out on rocks, Howe Sound, British Colombia, Canada

Matthias Breiter / Harbor Seal (Phoca vitulina) on rock, Saturna Island, British Columbia, Canada

Suzi Eszterhas / Harbor Seal (Phoca vitulina) in eelgrass, Monterey Bay, California

Suzi Eszterhas / Harbor Seal (Phoca vitulina) mother and one to two week old pup nuzzling, Monterey Bay, California

Suzi Eszterhas / Harbor Seal (Phoca vitulina) newborn pup piggyback riding mother, Monterey Bay, California

Suzi Eszterhas / Harbor Seal (Phoca vitulina), Monterey Bay, California

Suzi Eszterhas / Harbor Seal (Phoca vitulina) one to two week old pup, Monterey Bay, California

Suzi Eszterhas / Harbor Seal (Phoca vitulina) mother and one to two week old pup nuzzling, Monterey Bay, California

Suzi Eszterhas / Harbor Seal (Phoca vitulina), Monterey Bay, California

Suzi Eszterhas / Harbor Seal (Phoca vitulina) in shallow water, Monterey Bay, California

Kevin Schafer / Harbor Seal (Phoca vitulina) resting on rock in water, Woodfjorden, Svalbard, Norway

Suzi Eszterhas / Harbor Seal (Phoca vitulina) portrait, Katmai National Park, Alaska

Suzi Eszterhas / Harbor Seal (Phoca vitulina) entering water, Katmai National Park, Alaska

Suzi Eszterhas / Harbor Seal (Phoca vitulina) mother and pup hauled out on rocks, Katmai National Park, Alaska

Suzi Eszterhas / Harbor Seal (Phoca vitulina) mother and pup hauled out on rocks, Katmai National Park, Alaska

Suzi Eszterhas / Harbor Seal (Phoca vitulina) hauled out on rocks, Katmai National Park, Alaska

Suzi Eszterhas / Harbor Seal (Phoca vitulina) hauled out on rocks, Katmai National Park, Alaska

Matthias Breiter / Harbor Seal (Phoca vitulina) group hauled out on rock, Katmai National Park, Alaska

Matthias Breiter / Harbor Seal (Phoca vitulina) group hauled out on seaweed and barnacle covered rock, Katmai National Park, Alaska

Jan Vermeer / Harp Seal (Phoca groenlandicus) pup on ice floe, Magdalen Islands, Gulf of Saint Lawrence, Canada

Jan Vermeer / Harp Seal (Phoca groenlandicus) pup, Magdalen Islands, Gulf of Saint Lawrence, Canada

Jan Vermeer / Harp Seal (Phoca groenlandicus) pup, Magdalen Islands, Gulf of Saint Lawrence, Canada

Jan Vermeer / Harp Seal (Phoca groenlandicus) pup, Magdalen Islands, Gulf of Saint Lawrence, Canada

Jan Vermeer / Harp Seal (Phoca groenlandicus) pup nursing, Magdalen Islands, Gulf of Saint Lawrence, Canada

Jan Vermeer / Harp Seal (Phoca groenlandicus) group on ice field, Magdalen Islands, Gulf of Saint Lawrence, Canada

Jan Vermeer / Harp Seal (Phoca groenlandicus) pup suckling, Magdalen Islands, Gulf of Saint Lawrence, Canada

Heike Odermatt / Common Seal (Phoca vitulina) young on beach, Helgoland, Germany

Jan Vermeer / Harp Seal (Phoca groenlandicus) pup, Magdalen Islands, Gulf of Saint Lawrence, Canada

Jan Vermeer / Harp Seal (Phoca groenlandicus) pup, Magdalen Islands, Gulf of Saint Lawrence, Canada

Jan Vermeer / Harp Seal (Phoca groenlandicus) pup, Magdalen Islands, Gulf of Saint Lawrence, Canada

Jan Vermeer / Harp Seal (Phoca groenlandicus) pup covered with snow, Magdalen Islands, Gulf of Saint Lawrence, Canada

Jan Vermeer / Harp Seal (Phoca groenlandicus) pup, Magdalen Islands, Gulf of Saint Lawrence, Canada

Jan Vermeer / Harp Seal (Phoca groenlandicus) with pup, Magdalen Islands, Gulf of Saint Lawrence, Canada

Jan Vermeer / Harp Seal (Phoca groenlandicus) with pup, Magdalen Islands, Gulf of Saint Lawrence, Canada

Jan Vermeer / Harp Seal (Phoca groenlandicus) pup on ice, Magdalen Islands, Gulf of Saint Lawrence, Canada

Jan Vermeer / Harp Seal (Phoca groenlandicus) pup, Magdalen Islands, Gulf of Saint Lawrence, Canada

Jan Vermeer / Harp Seal (Phoca groenlandicus) tail of a pup, Magdalen Islands, Gulf of Saint Lawrence, Canada

Jan Vermeer / Harp Seal (Phoca groenlandicus) pup, Magdalen Islands, Gulf of Saint Lawrence, Canada

Jan Vermeer / Harp Seal (Phoca groenlandicus) pup, Magdalen Islands, Gulf of Saint Lawrence, Canada

Jan Vermeer / Harp Seal (Phoca groenlandicus) pup, Magdalen Islands, Gulf of Saint Lawrence, Canada

Jan Vermeer / Harp Seal (Phoca groenlandicus) pup, Magdalen Islands, Gulf of Saint Lawrence, Canada

Jan Vermeer / Harp Seal (Phoca groenlandicus) pup, Magdalen Islands, Gulf of Saint Lawrence, Canada

Jan Vermeer / Harp Seal (Phoca groenlandicus) pup on ice, Magdalen Islands, Gulf of Saint Lawrence, Canada

Jan Vermeer / Harp Seal (Phoca groenlandicus) pup, Magdalen Islands, Gulf of Saint Lawrence, Canada

Jan Vermeer / Harp Seal (Phoca groenlandicus) looking out from ice, Magdalen Islands, Gulf of Saint Lawrence, Canada

Hiroya Minakuchi / Harp Seal (Phoca groenlandicus) mother and pup nuzzling, Gulf of St. Lawrence, Canada

Hiroya Minakuchi / Harp Seal (Phoca groenlandicus) pup lying on ice, Gulf of St. Lawrence, Canada

Michio Hoshino / Harp Seal (Phoca groenlandicus) pup near opening in the ice, Canada

Michio Hoshino / Harp Seal (Phoca groenlandicus) group near opening in the ice, Canada

Fred Bavendam / Harbor Seal (Phoca vitulina) pair resting on rock, Monterey Bay, California

Sebastian Kennerknecht / Harbor Seal (Phoca vitulina) on rocks, Point Lobos State Reserve, California

Sebastian Kennerknecht / Harbor Seal (Phoca vitulina), Elkhorn Slough, Monterey Bay, California

Konrad Wothe / Harbor Seal (Phoca vitulina) group on icefloe, Alaska

Konrad Wothe / Harbor Seal (Phoca vitulina) group on icefloe, Alaska

Mitsuaki Iwago / Harp Seal (Phoca groenlandicus) pup scratching its ear, Gulf of St Lawrence, Canada

Michio Hoshino / Harp Seal (Phoca groenlandicus) swimming in drift ice, Canada

Kevin Schafer / Harp Seal (Phoca groenlandicus) pup and tourist, Magdalen Islands, Canada

Scott Leslie / Harbor Seal (Phoca vitulina) group resting on rocks, Nova Scotia, Canada

Norbert Wu / Harbor Seal (Phoca vitulina) mothers and pups hauled out on icebergs, LeConte Glacier, southeast Alaska

Norbert Wu / Harbor Seal (Phoca vitulina) mother and pup resting on iceberg, LeConte Glacier, southeast Alaska