Atlantic Ghost Crab (Ocypode Quadrata)

The Atlantic Ghost Crab (Ocypode Quadrata) is a fast-moving species commonly seen on beaches across Dominica. Known for its pale, sandy colour, it blends perfectly with the island’s black sand beaches and lighter coastal stretches. Ghost crabs dig deep burrows along the high-tide line, particularly on Londonderry Beach, Hampstead Bay, and the sandy edges near Scotts Head. Their presence is often a sign of healthy coastline ecosystems.

Behavior, Ecology of Atlantic Ghost Crab (Ocypode quadrata)

This land crab is an opportunistic scavenger, consuming washed-up detritus, seaweed, small invertebrates, and occasionally turtle hatchlings, making them vital contributors to wildlife interactions on beaches.  It occupies the supralittoral zone (above the high tide line), making burrows that may reach 1.3 m deep. The carapace is square, colour ranging from straw-grey to pale hues that help camouflage in sand. Eyes are borne on tall stalks, giving nearly 360° vision. Males tend to be larger than females. Its activity peaks at night; during day it remains in its burrow to avoid heat and predators. They are also ecological indicators: robust populations suggest healthy, undisturbed beaches, while declines often reflect human impacts from tourism industries, vehicles, or construction.

The Atlantic Ghost Crab plays an important role in marine conservation initiatives. Protecting sandy beaches, nesting grounds, and shoreline processes ensures that these crabs remain integral to the biodiversity web.