 Last year, the water got so hot, like off the charts. So corals are very complicated organisms. They have algae that lives inside their tissues. And when it gets too hot, they kick that algae out. And it leaves behind the coral tissue without any color. And there were areas of the reef last year when it was so hot that looked completely white. You know, some people may say, well, I just want to worry about human beings. I don't care about fish. I want to worry about human beings, too.