GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY GEORGETTE DOUWMA / SCIENCE PHOTO LIBRARY
Pygmy seahorse (Hippocampus bargibanti) camouflaged on a sea fan coral (Muricella sp.). The colouration and texture of this tiny seahorse have evolved to match the colour and shape of its host coral. It inhabits the tropical coral reefs of the western Pacific Ocean and reaches no more than 2.4 centimetres in length. Photographed off Sulawesi, Indonesia.
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