Coral reefs in India can be found in
A. Waltair
B. Trivandrum
C. The coast of OrissaD. Rameshwaram

Coral reefs in India are one of the most ancient and dynamic ecosystems of India. The coral reefs not only provide a sanctuary to a myriad of marine life but also play a key role in protecting the coastline from erosion. India has about 7517 km of coastline including islands but the mainland coast is 6100 km. They're found in Rameshwaram.