Bioluminescence in the marine environment is:

a. Widespread amonth both invertebreates and the fishes?
b. limited to plankton and survace dwelling organisms?

It is widespread.

Scroll down to
Organisms that bioluminesce
here:
http://en.wikipedia.org/wiki/Bioluminescence#Organisms_that_bioluminesce

Thanks

What is the total amount of dissolved material in water