denser ? is that a word?
I think "more dense", but hey what do I know, I teach math :blink

Now I would pose this question in response to other posts; If the ability to absord or reflect light is dependent upon the color of the coral (which can vary in and of itself with ea coral), do lighter colored/pigment corals need a longer photoperiod to photosynthesize/generate the same amount of energy as darker ones? Does the outer pigment color affect the ability to photosynthesize? Do darker pigmented specimens live in a more shallow or deeper water than the lighter colored ones? (in the wild, which would support the amount of light vs color theories).....One must ponder :unsure