One of the more unusual creatures to feature in the CoML is this deep-sea jellyfish, found in the waters off Japan, that - when attacked by a predator - uses bioluminescence to "scream" for help. The findings appear in the journal PLoS One.

A gallery of amazing pictures taken at depths of strange and unseen creatures. Considering these creatures live in the dark, they are very colourful. check at the full gallery on the BBC