Which sea animals emit light?
Light emitting sea animals
There are about 600 marine organisms which produce light from their bodies. The main groups of marine luminescent organisms include protozoans, coelentrates, polychactes molluscs, crustaceans and fishers. Many sea bacteria are also luminescent. Sponges jellyfish beetles files and earthworms also produce light. This type of luminescene is called bio-luminescence. Careful studies on fishes and other organisms have revealed that this light is the result of a series of chemical reactions taking place in the organisms. In this contest luminescence is Extracelluar.
Animals which produce luminescence by intracelluar mechanism luminescent glands. The others which produce liminscence by extracellular organs in some particular regions of their body. Lantern fish and angler fish are two well known luminsescent sea animals. The angler fish has its lighted baits placed in the mouth. Lantern fish produces definite patterns of light. Luminescence produced by sea animals is helpful in locating fish shoals because the movement of a large number of fishes produces light which can be detected by light sensors.