Which one of the following is of the world’s richest regions in terms of marine biodiversity, which includes estuaries, sea coasts, near-shore coastal forests, seagrass, coral reefs, salt marshes and mangroves, along with twenty-one islands?

Explanation

## Page 32 Among the given options, the Gulf of Mannar Biosphere Reserve is one of the world’s richest regions in terms of marine biodiversity. This region includes estuaries, sea coasts, near-shore coastal forests, seagrass, coral reefs, salt marshes and mangroves, along with 21 islands.