A coral atoll.
A circular coral island that encloses a lagoon is called an atoll. Atolls are typically formed from coral reefs that grow around the rim of a submerged volcanic island.
well one... dont litter and so on....
called hermatypic coral.
They actually are called Coral. Because Coral are named for the "coral" that they leave behind.
It's called a reed.
The reason they are called Coral Reef is because there are lots of coral in those locations, and they are also called coral reefs or reefs of coral reefs of coral too.
A large mass of coral is called a coral reef. There are usually many organisms living in or surrounding the coral reef.
They are just called baby coral.
There are lots of coral reefs in it.
Ther is no smallest coral reef as coral is growing every day it's only then when a patch of coral grow together that it is a coral reef, but once a reef becomes bigger and then others notice it then is not stated on any map
An atoll is a ring-shaped coral reef island that encircles a lagoon partially or completely. Atolls are typically found in the Pacific Ocean and are formed from the remnants of volcanic islands that have submerged over time. The circular shape of atolls is a result of coral growth around the rim of a sinking volcanic island.