The secret to Costa Rica's deep-carbon sink is a tiny fish that lives so deep that very few people have ever seen one alive.

The little lantern fish, Symbolophorus, are smaller than your finger. Every night, all around the world, huge numbers of glowing fish rise from the depths of the sea, eat heaps of carbon-rich plankton, and then drop back down again sealing the carbon in their waste.

(READ the story from The Tico Times)