Scientific Name: Charybdis hawaiensis
Common Name: Hawaiian Swimming Crab

Size: 4 – 8 cm
Depth Range: 0 – 20 m
Habitat: Found in sandy and rocky coastal waters, often near coral reefs or lagoon areas
Diet: Omnivorous; preys on small fish, invertebrates, and scavenges on organic debris
Reproduction: Separate sexes; females carry fertilized eggs in a mass under their abdomen until they hatch
Fun Fact: This crab is a strong swimmer, using its flattened hind legs as paddles. It’s active and aggressive, making it a lively reef inhabitant!

Observation Tip: Look in sandy areas near reefs or in lagoon environments. They’re fast swimmers, so watch for quick dashes in shallow waters!