About Lesson
ii. Coral reefs
They are very tiny creatures with the ability to secrete calcium carbonate within their cells has given rise to a particular type of landform.
Favourable conditions corals survive –
- Water Temperature – Not below 200C
- Area – Tropical and subtropical zones
- Shallow water area
- Saltish and free from sediment water
There are different types of coral reefs such as Fringing Reefs, Barrier Reefs and Atolls.
[Title: Coral reefs]