Scientific Name: Percnon planissimum
Common Name: Flat Rock Crab

Size: 3 – 5 cm
Depth Range: 0 – 30 m
Habitat: Found on exposed rocky shores and coral reef flats, usually hiding in crevices or under rocks
Diet: Omnivorous, feeding on algae, small invertebrates, and organic detritus
Reproduction: Separate sexes; females carry eggs on their abdomen until they hatch into planktonic larvae
Fun Fact: Known for its flat, streamlined body and rapid movements, the Flat Rock Crab is a master at navigating wave-swept rocky environments.

Observation Tip: Look in rocky tide pools and reef flats during low tide. They’re most active at dusk and dawn, quickly scuttling over rocks with surprising agility!