Coral reefs are filled with colorful ocean life ... Coral reefs cover less than 1% of the ocean floor. But, they provide an essential ecosystem for a quarter of all marine life.

Lukeson Chekani, a local of the island, talked to ABC’s The Pacific Program about the strange color of the shore ... sunken into the ocean floor off the Solomon Islands' coastline.

The oxygen isotope composition of the tiny minerals in the diamonds is also unlike that from typical mantle material and has only been observed elsewhere in rocks that have been altered on the ocean ...