Diver Everton Simpson plants staghorn coral, harvested from a coral nursery, inside the the White River Fish Sanctuary in Ocho Rios, Jamaica.

Everton Simpson squints at the Caribbean from his motorboat, scanning the dazzling bands of color for hints of what lies beneath. Emerald green indicates sandy bottoms. Sapphire blue lies above seagrass meadows. And deep indigo marks coral reefs. That’s where he’s headed.

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