SAINT MARTIN, Bangladesh (Reuters Life!) - Corals and clear blue water have helped Bangladesh's only coral island become a major tourist attraction -- just don't expect a buzzing nightlife. While ...

MICHEL MARTIN, HOST: Coral reefs are among the most biodiverse and imperiled habitats on the planet. Aoki says when the reef is thriving, fish and other marine creatures create a rich soundscape.

Showing Francis a map from a newly released atlas of the world's coral reefs, Asner zoomed in on one of the underwater structures, which are made up of a multitude of tiny aquatic animals. "I said ...