Cellulose.
The hard coral polyp makes the coral
Calcium and phosphorus
Calcium carbonate
It is a hard coral
hard coral
Hard Coral is not a fish but, some small fish live in hard coral.
Hard
Yes, Brain Coral is a hard coral, as are most forms of coral.it's a dry brittle textured coral breed.
Coral reefs are formed by polyps that produce a hard shell of calcium carbonate. The polyps belong to a group of animals known as Cnidaria.
It is a hard coral that is usually lace like in apearence and come in a variety of colours.
It is difficult or hard to identify a coral specimen
well their is soft coral and hard coral +brain coral breanha coral lily coral and extra coral