This reminds me of a stunning coral reef fish, the Elegant Coris.
Found on a rusting WWII vintage Higgins boat.
Oxidized paint on the boat plus some lubricating oil from long ago seeped down the sides of the decrepit vessel, creating some wonderful rainbow effects.
Sand Island, Midway Atoll, Papahanaumokuakea Marine National Monument, Territory of The United States of America
May 9, 2010
Canon 50D, Canon 60mm macro lens, polarizer, Manfrotto tripod, Wimberley II tripod head, cable release, shutter 1/60, f/9.0, manual, focal length 22mm, ISO 400