California sea lions swim and socialize over a kelp-covered rocky reef, underwater at San Clemente Island in California's southern Channel Islands, Zalophus californianus

California Sea Lion, San Clemente Island

California sea lion underwater, Sea of Cortez, Mexico, Zalophus californianus

California Sea Lion Underwater, Sea Of Cortez, Mexico

California sea lions underwater, Sea of Cortez, Mexico, Zalophus californianus

California Sea Lions Underwater, Sea Of Cortez, Mexico

California sea lion underwater, Sea of Cortez, Mexico, Zalophus californianus

California Sea Lion Underwater, Sea Of Cortez, Mexico

California sea lion underwater, Sea of Cortez, Mexico, Zalophus californianus

California Sea Lion Underwater, Sea Of Cortez, Mexico

Sea lion underwater in beautiful sunset light, Zalophus californianus, Sea of Cortez

Sea Lion Underwater In Beautiful Sunset Light, Sea Of Cortez

Young California sea lion pups underwater, Sea of Cortez, Mexico, Zalophus californianus

Young California Sea Lion Pups Underwater, Sea Of Cortez

California sea lion underwater, Sea of Cortez, Mexico, Zalophus californianus

California Sea Lion Underwater, Sea Of Cortez, Mexico

Killer whale attacking sea lion.  Biggs transient orca and California sea lion, Orcinus orca, Zalophus californianus, Palos Verdes

Killer Whale Orca Attacking Sea Lion, Palos Verdes

California sea lion underwater, Zalophus californianus, Sea of Cortez

California Sea Lion Underwater, Sea Of Cortez

California sea lion and school of sardines underwater, Sea of Cortez, Baja California, Zalophus californianus

California Sea Lion And School Of Sardines Underwater, Sea Of Cortez

California sea lion, underwater at Santa Barbara Island.  Santa Barbara Island, 38 miles off the coast of southern California, is part of the Channel Islands National Marine Sanctuary and Channel Islands National Park.  It is home to a large population of sea lions, Zalophus californianus

California Sea Lion, Santa Barbara Island

California sea lions swim and socialize over a kelp-covered rocky reef, underwater at San Clemente Island in California's southern Channel Islands, Zalophus californianus

California Sea Lion, San Clemente Island

California sea lions, Coronado Islands, Zalophus californianus, Coronado Islands (Islas Coronado)

California Sea Lion, Coronado Islands

California sea lions, socializing/resting, Webster Point rookery, Santa Barbara Island, Channel Islands National Marine Sanctuary, Zalophus californianus

California Sea Lion, Santa Barbara Island

California sea lion underwater, Zalophus californianus, Sea of Cortez

California Sea Lion Underwater, Sea Of Cortez

California sea lion at oil rig Eureka, underwater, among the pilings supporting the oil rig, Zalophus californianus, Long Beach

California Sea Lion At Oil Rig Eureka, Long Beach

California sea lion at oil rig Eureka, underwater, among the pilings supporting the oil rig, Zalophus californianus, Long Beach

California Sea Lion At Oil Rig Eureka, Long Beach

California sea lions, underwater at Santa Barbara Island.  Santa Barbara Island, 38 miles off the coast of southern California, is part of the Channel Islands National Marine Sanctuary and Channel Islands National Park.  It is home to a large population of sea lions, Zalophus californianus

California Sea Lions, Santa Barbara Island

California sea lions, underwater at Santa Barbara Island.  Santa Barbara Island, 38 miles off the coast of southern California, is part of the Channel Islands National Marine Sanctuary and Channel Islands National Park.  It is home to a large population of sea lions, Zalophus californianus

California Sea Lions, Santa Barbara Island

California sea lion underwater, Zalophus californianus, Sea of Cortez

California Sea Lion Underwater, Sea Of Cortez

California sea lion underwater playing with sea star, Zalophus californianus, Sea of Cortez

California Sea Lion Underwater, Sea Of Cortez

Killer whale attacking sea lion.  Biggs transient orca and California sea lion, Orcinus orca, Zalophus californianus, Palos Verdes

Killer Whale Orca Attacking Sea Lion, Palos Verdes

California sea lion injured by fishing line, Zalophus californianus, Sea of Cortez

California Sea Lion Underwater, Sea Of Cortez

Large group of bachelor adult male California sea lions, underwater view, at Isla Las Animas near La Paz, Sea of Cortez, Baja California, Zalophus californianus

Large Group Of Bachelor Adult Male California Sea Lions, Sea Of Cortez

California sea lion, Zalophus californianus, Coronado Islands (Islas Coronado)

California Sea Lion, Coronado Islands

California sea lion hauled out on rocks beside the ocean, Zalophus californianus, La Jolla

California Sea Lion, La Jolla

A California sea lion plays with a piece of kelp, underwater at Santa Barbara Island.  Santa Barbara Island, 38 miles off the coast of southern California, is part of the Channel Islands National Marine Sanctuary and Channel Islands National Park.  It is home to a large population of sea lions, Zalophus californianus

California Sea Lion Plays With Kelp, Santa Barbara Island

California sea lion, Coronados Islands, Zalophus californianus, Coronado Islands (Islas Coronado)

California Sea Lion, Coronado Islands

California sea lion, with monofiliment cut, Zalophus californianus, Monterey

California Sea Lion, Monterey

California sea lion underwater, Zalophus californianus, Sea of Cortez

California Sea Lion Underwater, Sea Of Cortez

California sea lion underwater, Zalophus californianus, Sea of Cortez

California Sea Lion Underwater, Sea Of Cortez

Sea lion portrait, hauled out on rocks beside the ocean, Zalophus californianus, La Jolla, California

California Sea Lion, La Jolla

Killer whale attacking sea lion.  Biggs transient orca and California sea lion, Orcinus orca, Zalophus californianus, Palos Verdes

Killer Whale Orca Attacking Sea Lion, Palos Verdes

A bull sea lion shows a brand burned into its hide by the Oregon Department of Fish and Wildlife, to monitor it from season to season as it travels between California, Oregon and Washington.  Some California sea lions, such as this one C-704, prey upon migrating salmon that gather in the downstream waters and fish ladders of Bonneville Dam on the Columbia River.  The "C" in its brand denotes Columbia River. These  sea lions also form bachelor colonies that haul out on public docks in Astoria's East Mooring Basin and elsewhere, where they can damage or even sink docks, Zalophus californianus

California Sea Lion With Id Brand, Columbia River

Sea lion head profile, showing small external ear, prominant forehead typical of adult males, whiskers.  This sea lion is hauled out on public docks in Astoria's East Mooring Basin.  This bachelor colony of adult males takes up residence for several weeks in late summer on public docks in Astoria after having fed upon migrating salmon in the Columbia River.  The sea lions can damage or even sink docks and some critics feel that they cost the city money in the form of lost dock fees, Zalophus californianus

California Sea Lion, Columbia River

California sea lion, adult male, profile of head showing long whiskers and prominent sagittal crest (cranial crest bone), hauled out on rocks to rest, early morning sunrise light, Monterey breakwater rocks, Zalophus californianus

California Sea Lion, Monterey

California sea lion, Zalophus californianus, Guadalupe Island (Isla Guadalupe)

California Sea Lion, Guadalupe Island, Mexico

California sea lion, juveniles at play in kelp forest, Zalophus californianus, Santa Barbara Island

California Sea Lion In Kelp Forest, Santa Barbara Island

California sea lion, Zalophus californianus, Guadalupe Island (Isla Guadalupe)

California Sea Lion, Guadalupe Island

California sea lion, Coronado Islands, Zalophus californianus, Coronado Islands (Islas Coronado)

California Sea Lion, Coronado Islands

California sea lion, thermoregulating, Zalophus californianus, Monterey

California Sea Lion, Monterey

California sea lions, Coronado Islands, Zalophus californianus, Coronado Islands (Islas Coronado)

California Sea Lion, Coronado Islands

California sea lion pup starving during 1997-8 El Nino event, Coronado Islands, Zalophus californianus, Coronado Islands (Islas Coronado)

California Sea Lion, Coronado Islands

California sea lion and baitfish, Los Islotes, Sea of Cortez, Zalophus californianus

California Sea Lion

California sea lion, Coronado Islands, Zalophus californianus, Coronado Islands (Islas Coronado)

California Sea Lion, Coronado Islands

California sea lion, Zalophus californianus, Santa Barbara Island

California Sea Lion, Santa Barbara Island

California sea lion, Zalophus californianus, Guadalupe Island (Isla Guadalupe)

California Sea Lion, Guadalupe Island

California sea lion, Zalophus californianus, San Clemente Island

California Sea Lion, San Clemente Island

California sea lion, Los Coronado Islands, Zalophus californianus, Coronado Islands (Islas Coronado)

California Sea Lion, Coronado Islands

California sea lion colony, Los Coronado Islands, Zalophus californianus, Coronado Islands (Islas Coronado)

California Sea Lion, Coronado Islands

California sea lion colony, Zalophus californianus, Monterey

California Sea Lion, Monterey

California sea lion, Webster Point rookery, Zalophus californianus, Santa Barbara Island

California Sea Lion, Santa Barbara Island

California sea lion, Webster Point rookery, Zalophus californianus, Santa Barbara Island

California Sea Lion, Santa Barbara Island

California sea lion, Zalophus californianus, Santa Barbara Island

California Sea Lion, Santa Barbara Island

California sea lions, hauled out at rookery/colony, Baja California, Zalophus californianus

California Sea Lion

California sea lion, Baja California, Zalophus californianus

California Sea Lion

California sea lions, socializing/resting, Webster Point rookery, Santa Barbara Island, Channel Islands National Marine Sanctuary, Zalophus californianus

California Sea Lion, Santa Barbara Island

California sea lions hauled out on rocks beside the ocean, Zalophus californianus, La Jolla

California Sea Lion, La Jolla

California sea lion, adult male, Zalophus californianus, La Jolla

California Sea Lion, La Jolla

Killer whale attacking sea lion.  Biggs transient orca and California sea lion, Orcinus orca, Zalophus californianus, Palos Verdes

Killer Whale Orca Attacking Sea Lion, Palos Verdes

Killer whale attacking sea lion.  Biggs transient orca and California sea lion, Orcinus orca, Zalophus californianus, Palos Verdes

Killer Whale Orca Attacking Sea Lion, Palos Verdes

Killer whale attacking sea lion.  Biggs transient orca and California sea lion, Orcinus orca, Zalophus californianus, Palos Verdes

Killer Whale Orca Attacking Sea Lion, Palos Verdes

Killer whale attacking sea lion.  Biggs transient orca and California sea lion, Orcinus orca, Zalophus californianus, Palos Verdes

Killer Whale Orca Attacking Sea Lion, Palos Verdes

California sea lion, adult male, hauled out on rocks to rest, early morning sunrise light, Monterey breakwater rocks, Zalophus californianus

California Sea Lion, Monterey

California sea lion, adult male, hauled out on rocks to rest, early morning sunrise light, Monterey breakwater rocks, Zalophus californianus

California Sea Lion, Monterey

California sea lion, adult male, profile of head showing long whiskers and prominent sagittal crest (cranial crest bone), hauled out on rocks to rest, early morning sunrise light, Monterey breakwater rocks, Zalophus californianus

California Sea Lion, Monterey

California sea lions, on rocks along the Pacific Ocean, Zalophus californianus, La Jolla

California Sea Lions On Rock By The Ocean, La Jolla

Large group of bachelor adult male California sea lions, underwater view, at Isla Las Animas near La Paz, Sea of Cortez, Baja California, Zalophus californianus

Large Group Of Bachelor Adult Male California Sea Lions, Sea Of Cortez

Killer whale attacking sea lion.  Biggs transient orca and California sea lion, Orcinus orca, Zalophus californianus, Palos Verdes

Killer Whale Orca Attacking Sea Lion, Palos Verdes

Killer whale attacking sea lion.  Biggs transient orca and California sea lion, Orcinus orca, Zalophus californianus, Palos Verdes

Killer Whale Orca Attacking Sea Lion, Palos Verdes

California sea lions, hauled out on rocks beside the ocean, resting in the sun, Zalophus californianus, La Jolla

California Sea Lion, La Jolla

California sea lion hauled out on rocks beside the ocean, Zalophus californianus, La Jolla

California Sea Lion, La Jolla

California sea lion, Zalophus californianus, Guadalupe Island (Isla Guadalupe)

California Sea Lion, Isla Guadalupe, Mexico, Guadalupe Island

Sea lion portrait, hauled out on rocks beside the ocean, Zalophus californianus, La Jolla, California

California Sea Lion, La Jolla

California sea lion, Zalophus californianus, Guadalupe Island (Isla Guadalupe)

California Sea Lion, Guadalupe Island, Mexico

California sea lion, Zalophus californianus, Laguna Beach

California Sea Lion, Laguna Beach

California sea lion, Sea of Cortez, Zalophus californianus

California Sea Lion

California sea lion, Zalophus californianus, Santa Barbara Island

California Sea Lion, Santa Barbara Island

California sea lions, Zalophus californianus, Laguna Beach

California Sea Lion, Laguna Beach

California sea lion, adult female, Zalophus californianus, La Jolla

California Sea Lion, La Jolla

California sea lion, Zalophus californianus, La Jolla

California Sea Lion, La Jolla

Sea lions hauled out on public docks in Astoria's East Mooring Basin.  This bachelor colony of adult males takes up residence for several weeks in late summer on public docks in Astoria after having fed upon migrating salmon in the Columbia River.  The sea lions can damage or even sink docks and some critics feel that they cost the city money in the form of lost dock fees, Zalophus californianus

California Sea Lion, Columbia River

A bull sea lion shows a brand burned into its hide by the Oregon Department of Fish and Wildlife, to monitor it from season to season as it travels between California, Oregon and Washington.  Some California sea lions, such as this one C-704, prey upon migrating salmon that gather in the downstream waters and fish ladders of Bonneville Dam on the Columbia River.  The "C" in its brand denotes Columbia River. These  sea lions also form bachelor colonies that haul out on public docks in Astoria's East Mooring Basin and elsewhere, where they can damage or even sink docks, Zalophus californianus

California Sea Lion, Columbia River

California sea lion, adult male, breathing at surface, Zalophus californianus, San Diego

California Sea Lion, San Diego

California sea lion, adult male, profile of head showing long whiskers and prominent sagittal crest (cranial crest bone), hauled out on rocks to rest, early morning sunrise light, Monterey breakwater rocks, Zalophus californianus

California Sea Lion, Monterey

California sea lion, Sea of Cortez, Zalophus californianus

California Sea Lion

California sea lions, Coronado Islands, Zalophus californianus, Coronado Islands (Islas Coronado)

California Sea Lion, Coronado Islands