Peacock Flounder, <i>Bothus mancus</i> displaying its <a href="https://en.wikipedia.org/wiki/active_camouflage" class="extiw" title="w:active camouflage">active camouflage</a> abilities, changing colors depending on the colors of its surroundings. All frames are of the same fish taken few minutes apart. He changed colors to match his surroundings as I watched. In the last frame he buried himself in the sand. Almost nothing, but the eyes are seen.
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CC BY 2.5
<span class="int-own-work" lang="en">Own work</span>