Shrimps are the only decapod crustaceans that have been known to emit bioluminescent light in more than one way; this includes light from epidermal photophores as well as bioluminescent secretions.

This type of emission is likely a defense response. The shrimp releases bioluminescent chemicals into the water the way a squid or an octopus would release an ink cloud. This emission either blinds or distracts the predator. It is also possible that emissions are used to attract the attention of larger predators in order to frighten and drive away the shrimp’s attacker.

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CASE STUDY:

SHRIMP