Scorpion Fish
Red color is lost as you go deeper in the sea. This wavelength disappears earlier. At depth everything appears blue green. Flash will bring color back. But I ask. Why are the fish brightly colored if they spend most of their time at depth? The follow up question is, why do fish, who camouflage themselves in order to prey upon their victims, have brightly colored skin. Not all scorpion fish are bright in color. But this guy was certainly a standout.
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