Elephant seals (Mirounga angustirostris) showing extreme sexual dimorphism (difference between sexes). Male elephant seals can be 3-4 times as massive as females. Central California.
Elephant seals in the surf, showing extreme dimorphism, males (5000 lb) are triple the size of females (1700 lb). Central California.
Image ID: 15497
Species: Elephant seal, Mirounga angustirostris
Location: Piedras Blancas, San Simeon, California, USA