This is a pygmy seahorse, a tiny creature smaller than a fingernail that looks almost exactly like coral.

These miniature seahorses live in coral reefs across the Indo-Pacific, where their colors and bumpy bodies perfectly blend with the coral they cling to. Their amazing camouflage helps them stay hidden from predators and makes them extremely difficult to spot in the wild.

Fun fact: most pygmy seahorses spend their entire lives living on a single coral colony.