Question

why are some marine creatures living in the deep sea give out light of their own ?

Answer 1

they contain enough iodine in their body,which is the only non metal in living things which shows lusture.

Answer 2

Ans. The characteristic due to which the marine creatures which live in the deep sea give out the light of their own is called bioluminescence. The exact function of bioluminescence is not known exactly.

However, it is believed that animals use this characteristic to warn their enemies, to attract their prey and to communicate among themselves. This is found in not only marine creatures but also in fireflies.