Geograpsus Lividus

Geograpsus Lividus is a fast, agile grapsid crab that lives on rocky and cobble shores just above the high-tide line, sheltering under stones and wedged driftwood. It dashes between wave surges in the splash zone and forages along tidepool edges. Reliable spots include the lava headland at Scotts Head and stretches of Dominican black sand beaches where boulder fields meet open surf.

Ecological and Cultural Significance

Geograpsus Lividus scavenges and also scrapes micro-algae and diatoms from rock surfaces, helping to keep intertidal stones clean while recycling organic matter. Its activity supports shoreline food webs forming part of Dominica’s Marine Ecosystems, contributing to nutrient turnover within the island’s biodiversity.

Sightings and Best Viewing Areas

Look for movement at twilight or after dark when individuals leave cover. Scan boulder piles and pool rims, then watch the splash zone between waves. Calm seas make approaches safer; sturdy footwear helps on slick rock. Viewpoints around Soufrière Scotts Head Marine Reserve coastline offer some of the most consistent encounters without disturbing habitat.