New Zealand fur seals and erect-crested penguins, Bounty Island, Sub-Antarctic, Polar Regions

Southern elephant seal (Mirounga leonina) pup, called weaners once their mothers stop nursing, South Georgia Island, Southern Ocean

Southern elephant seals (Mirounga leonina), hauled out for their annual catastrophic molt (moult) on the beach at Snow Island, Antarctica, Polar Regions

Northern giant petrels (Macronectes halli) fighting over the scavenging rights to a dead elephant seal pup at Royal Harbor, South Georgia

Northern giant petrels (Macronectes halli) fighting over the scavenging rights to a dead elephant seal pup at Royal Harbor, South Georgia

Male southern elephant seal (Mirounga leonina) pups mock fighting on South Georgia Island, Southern Ocean

Bull southern elephant seal (Mirounga leonina) on South Georgia Island, Southern Ocean

Attacking Californian Sea Lion, Zalophus californianus, Mexico, Sea of Cortez, Baja California, La Paz

Californian Sea Lion and skin-diver, Zalophus californianus, Mexico, Sea of Cortez, Baja California, La Paz

Handshake