When water becomes too hot (or too cold) the corals expel the algae — and with it, its main source of food.
Bí omi bá gbóná ju bí ó ṣe yẹ lọ (tàbí bí ó bá tutù jù) àwọn iyùn yóò lé ewé omi — tí yóò sì pàdánù ọwọ́ tí ó ń fi oúnjẹ nù ún.