Land crabs are terrestrial crustaceans that primarily live on land but are closely related to their aquatic counterparts. They belong to various families, with the most well-known being the Gecarcinidae family, which includes species like the Coconut Crab. These crabs have adapted to life on land by developing lungs for breathing air and a hard exoskeleton to retain moisture. Typically found in tropical and subtropical regions, land crabs play a vital role in their ecosystems by helping to decompose organic matter and aerate the soil. They are often seen scavenging for food, including fruits, leaves, and detritus, making them important contributors to nutrient cycling in their habitats.