David Fleetham / Galapagos Sea Lion (Zalophus californianus wollebacki) framed by a school of Black Striped Salema (Xenocys jessiae). Santa Cruz Island, Galapagos Islands, Equador.

Chris Newbert / Galapagos Shark (Carcharhinus galapagensis) among schooling Black-striped Salema (Xenocys jessiae), Galapagos Islands, Ecuador

Chris Newbert / Galapagos Sea Lion (Zalophus wollebaeki) playing with schooling Black-striped Salema (Xenocys jessiae), 30 feet deep, Galapagos Islands, Ecuador

Chris Newbert / Black-striped Salema (Xenocys jessiae) group schooling, and two Galapagos Sharks (Carcharhinus galapagensis) 50 feet deep, Galapagos Islands, Ecuador

Chris Newbert / Galapagos Sea Lion (Zalophus wollebaeki) playing in a school of Black-striped Salema (Xenocys jessiae) 20 feet deep, Galapagos Islands, Ecuador

David Fleetham / Marine iguana (Amblyrhynchus cristatus) feeding underwater on algae. Endemic species. With Schooling black striped salema (Xenocys jessiae)(endemic species) and yellowtail surgeonfish (Prionurus latic...

David Fleetham / Schooling Black Striped Salema / Snapper (Xenocys jessiae) and Yellowtail Surgeonfish (Prionurus laticlavius). Galapagos Islands, Equador. Three images were stitched to create this panorama.

David Fleetham / School of Black Striped Salema / Snapper (Xenocys jessiae) form a massive spinning ball. Galapagos Islands, Equador.

David Fleetham / Galapagos shark (Carcharhinus galapagensis) swimming through a school of Black striped salema (Xenocys jessiae). Galapagos Islands, Equador.

David Fleetham / Diver / photographer amongst shoal of Black striped salema (Xenocys jassiae), Galapagos Islands, Equador. Model released.

Pete Oxford / Black striped salema (Xenocys jessiae) shoal, Central Isles. Galapagos. Endemic species.

Pete Oxford / Black striped salema (Xenocys jessiae) shoal, Central Isles. Galapagos. Endemic species.