Talk:Brain Coral/@comment-33237856-20171221002912

now WHY does the...uh, pirimary. have these? and HOW do they get the oxygen? is it like a plant? co2 in, oxygen out? but it's underwater. did the water absorb a lot of co2? is it because of all the animals only being uderwater, saturating the water with co2? that would cause the animals to die, because there are many more animals than plants, and specificaly brain coral.