I'm not 100% sure of all the types, but I do know that there are about 350 different types in the Great Barrier Reef. There is a very common type called staghorn coral and it grows in the form of a deer's antlers and can grow up to four inches or ten centimeters a year, which is very fast for coral to grow.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.