Brown pelicans are fairly common throughout a large part of the Americas. This one was patrolling the coastline of Santa Cruz in the Galapagos Islands, searching for fish. They dive at high speeds, submerging themselves completely in the water before surfacing, spilling the excess water from their throat pouches and swallowing their prey.
Nikon D800 with Nikkor 200-400mm lens (at 200mm) ISO 400, f/5.6 at 1/5000th of a second (-1/3 stop ev)