Odobenus rosmarus rosmarus

f10 @ 1/2000s, ISO:640, Nikon D3S w 300mm

"Walrus," Wikipedia, the free encyclopedia. Two subspecies of walrus are widely recognized: the Atlantic walrus, O. r. rosmarus (Linnaeus, 1758) and the Pacific walrus, O. r. divergens (Illiger, 1815). Fixed genetic differences between the Atlantic and Pacific subspecies indicate very restricted gene flow, but relatively recent separation, estimated at 500,000 and 785,000 years ago.
Smeerenberg, Svalbard, Norway