Eventually, the coral starves to death; the most noticeable outward sign of this phenomenon is that the coral loses its colour, going from shades of brown and green to a crisp, brittle, bone white.
A ƙarshe gansakuka zai mutu da yunwa; babbar alamar wannan shi ne gansakuka ya rasa launinsa, ya canja daga ruwan ƙasa-ƙasa da kore zuwa farin ƙashi mai gautsi.