The marine biologists have got the glimpses of the light inside the deep sea water. The camera have shown that the amount of light that is present there is enough to see the organisms living in there.
But the amount of light present there is not enough for the process of photosynthesis.
The organisms there in the deep water has their own body luminescence that allows them to glow in the dark.
This light helps them them to escape from the danger, finding food and to find the best mates.
