Black coral

Black coral is a power source from the Generation 1 continuity family.

A mysterious black coral growing on the bottom of Dolphin Bay is a source of almost limitless energy.

Fiction

Find Your Fate Junior

The Constructicons discovered the black coral while constructing a hidden base in Mount Lomas. Predicting that it would triple Decepticon warmaking capability, the base was converted into a full-scale superfuel refinery.

To prevent unwanted snoopy kids with dogs, the black coral was protected by underwater mines. Dinobots Strike Back