Moorish Idol

Photo: David R · CC BY-NC

Moorish idols aggregate in large, swirling schools along the upper reef edges at Banks Bay, their distinctive black, white, and yellow banding creating a kaleidoscopic visual effect in numbers. While individually common across the Indo-Pacific, their schooling behavior here in groups of 50 or more is unusual and is likely linked to the site's high productivity driving collective feeding strategies on sponges and tunicates. They appear at multiple depth bands simultaneously, making them a constant companion throughout the dive from the shallows to the deeper wall sections.