Peacock mantis shrimp—also called harlequin ... they use their raptor-like front arm to dig burrows on the seabed surrounding a coral reef. When they move on, other marine animals may take ...

Roi, also called peacock groupers for their colorful spots and stripes, are moderate-sized predatory fish that can be found ... really important on coral reefs.” Roi only eat about 2.5 times ...