A massive school of bigeye trevally (Caranx sexfasciatus) swims in deep water near Cocos Island, Costa Rica. This remote island is home to an incredible variety of marine life.

abundance animal animal behavior animal themes animals in the wild aquatic bigeye trevally biodiversity blue carangidae caranx sexfasciatus central america cocos island color image conformity costa rica day ecology fish following full frame full length grace habitat horizontal ichthyology jack fish large group of animals marine biology motion nature no people ocean on the move osteichthyes outdoors pacific ocean perciformes photography reef reefscape school of fish science sea sea life seascape shiny side view swimming togetherness trevally tropical climate tropical fish undersea underwater unity vertebrate wilderness wildlife zoology