the coral is stressed due to factors like pollution or rising ocean temperatures, the algae leaves the coral and the coral itself becomes bleached. There is a chance that the algae would return if the ocean’s temperature went back to its optimal temperature. However, if the temperature remains high, then the corals will become bleached and will indeed start to die off. This is exactly what has happened this year.
the coral is stressed due to factors like pollution or rising ocean temperatures, the algae leaves the coral and the coral itself becomes bleached. There is a chance that the algae would return if the ocean’s temperature went back to its optimal temperature. However, if the temperature remains high, then the corals will become bleached and will indeed start to die off. This is exactly what has happened this year.