An endoskeleton.
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.
There are lots of coral reefs in it.
some coral reefs do live alone, but some live in groups called colonies.
The person that studies coral reefs is called a coral reef biologist. This type of scientist spends time underwater to study the status of coral reefs and also looks into the effects of other factors to the preservation of coral reefs.
Coral Reefs
no dolphins are not in coral reefs.
Marine biology
a group of fish in the coral reefs is called a school of fish
There are no coral reefs IN California
They were called anemones.
are coral reefs can be gas of ships?
Coral reefs are being killed by pollutants.