The open ocean can be a forbidding place.

Not only in its vastness or raw power but for the animals and organisms it hosts as well.

It really is survival of the fittest or if the case may be, the brightest.

It is thought that on average up to 76% of the animals in our oceans create their own light - a process called bioluminescence.

But why?

Dr. Edith Widder is Co-Founder, CEO, and Senior Scientist at the Ocean Research & Conservation Association (ORCA)