Coral is a living invertebrate. By living in the sea area in tropical zone, which has temperature since 18-32 Celsius which In water with a depth of no more than 60 meters. The coral has breeding 2 form. There are sexual reproduction and Asexual reproduction
.- a live sex, it will leave the eggs with the current and to stick to the fossil. When the temperature is moderation. It's mating and the opportunity to see the result. Because it depends on the temperature
.- do not rely on sex, I will break the coral branches strong, breeding. The fossil lump under the sea to cement with sand and put the coral. Then the cement dry mix.