Roundup at Revillagigedo, by Ralph Pace, Big Picture wildlife images competition, aquatic life, finalist
The remote Revillagigedo Islands off the west coast of Mexico are actually the four highest peaks of a mostly submerged volcanic mountain range. The cool waters from the North Pacific mix with the warm Northern Equatorial current. In this photograph, more than a thousand predators, including dusky sharks (
Carcharhinus obscurus), yellowfin tuna (
Thunnus albacares), and Galápagos sharks (
Carcharhinus galapagensis) work in unison to round up a shared meal of chub and other baitfish.
Photograph: Ralph Pace/Big Picture Photography Competition