GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY
Stonefish (Synanceia verrucosa), camouflaged and overgrown with algae, lying on corals. This is one of the world's most venomous fish. The sting from its spines can be lethal to humans. Algae (including macroalgae, like Padina) and sessile invertebrates often grow on its body surface and may actually attract potential prey. Photographed in the Red Sea off the coast of Egypt.
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