The best of the wildlife photography awards 2017 – in pictures | Environment

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.