Crown-of-thorns starfish (COTS) are large marine invertebrates which feed on coral as adults. They are native to the Great Barrier Reef. Adult COTS have an enormous appetite for eating hard coral. An adult crown-of-thorns starfish can consume up to 10 m2 of coral a year. 😨😵 Outbreaks of COTS are responsible for loss of reef-building corals on the Great Barrier Reef and elsewhere. Scientists and managers work together to understand outbreaks and develop ways to control them. Here we found one o