Yeah. That’s fish poop. Seriously. Parrot fish, so named because they have sharp,beak-like teeth, naw off algae that grows on corals. Along with the algae, the fish gets a mouthful of the coral’s calcium carbonate, which it expels as waste.
沒錯。就那是由魚糞便組成。不開玩笑的,鸚鵡魚,牠們因為有鳥一般尖銳的牙齒而被命名,會吃掉珊瑚上的藻類。吃了藻類,鸚鵡魚會攝取許多珊瑚上的碳酸鈣並連同排泄物一起排出。