While plants and some bacteria can make their own food ... too few tritons on the reef, crown-of-thorns starfish populations can explode, jeopardizing the living coral that makes up reefs.

A frightening phenomenon that's making seawater more acidic, spelling disaster for many marine animals, from plankton and coral up the food chain to sea stars ... We're already seeing the effects as ...

Coral reefs, often referred to as the "rainforests ... causing significant imbalances in food chains. As temperatures shift, so do the distribution and abundance of species, leading to a cascade ...