This is the dorsal fin of a great white shark (Carcharodon carcharias) at Guadalupe Island, sticking above the water as the shark cruises at the surface.
Dorsal fin of a great white shark breaks the surface as the shark swims just below.
Image ID: 19493
Species: Great white shark, Carcharodon carcharias
Location: Guadalupe Island (Isla Guadalupe), Baja California, Mexico
See also: great white shark photos, Guadalupe Island, Isla Guadalupe, Carcharodon carcharias photos.