### Identification The Horn-eyed Ghost Crab (*Ocypode ceratophthalmus*) is a fleet-footed phantom of the shoreline. Its boxy, rectangular carapace (up to 6cm wide) is a masterclass in camouflage, varying from pale cream to peppered grey to match the local sand. The definitive field mark is the terminal style: a long, pointed "horn" extending upward from the top of each eyestalk. Be careful, though—juveniles lack these horns entirely, making them easy to confuse with the Smooth Ghost Crab. Look for their asymmetrical chelipeds (claws); one is always significantly larger and features a specialized "stridulating" ridge used for making sound.
### Habitat & Range This species is a staple of the tropical Indo-Pacific, ranging from the East African coast across to the Hawaiian Islands. They are strictly "supralittoral," meaning they reside in the dry sand zone just above the high-tide mark. You won’t find them in muddy mangroves; they demand clean, high-energy sandy beaches where they can dig deep into the substrate.
### Behaviour Observing these crabs requires patience and a good flashlight. They are primarily nocturnal and crepuscular to avoid the desiccating sun and avian predators. They are world-class sprinters, capable of moving at speeds of 2 meters per second, often vanishing into their deep, J-shaped burrows in a blink. In the field, you’ll notice "sand pellets" fanned out around their burrow entrances—the result of neat excavation.
### Diet As the shoreline’s primary "clean-up crew," they are opportunistic generalists. They forage for beach-cast carrion and detritus but are also formidable predators. Using their speed, they hunt mole crabs, beach hoppers, and insects. In some regions, they are known to intercept sea turtle hatchlings during their dash to the ocean.
### Fascinating Fact The Horn-eyed Ghost Crab is a "vocal" crustacean! To defend their burrows, they rub the ridged surface of their large claw against the base of their leg. This produces a low-frequency rasping or "growling" sound, warning rivals that the burrow is occupied without the crab ever having to show its face.