Most bioluminescent ocean species emit a blue-green light, which, due to the shorter wavelengths of the colours, can travel further in the ocean. Some fireflies and certain snails glow yellow, and the so-called "railroad worm", a beetle larvae native to the Americas, is known to turn both red and greenish-yellow in a dotted pattern that resembles a train at night. Springhares – nocturnal rodents found in southern Africa – have even been found to have hair that produces a vivid pink biofluorescent glow.

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