The red crab, known scientifically as Gecarcoidea natalis, is a species native to the Christmas Island in the Indian Ocean. These crabs are famous for their vibrant red color and large size, with adults reaching up to 4 inches in width. They are primarily terrestrial and are known for their mass migrations to the sea during the breeding season. Red crabs play a crucial role in their ecosystem by helping to aerate the soil and recycle nutrients. Their diet mainly consists of decaying plant matter, making them important decomposers. The red crab's unique life cycle and behavior have made it a subject of interest for researchers and nature enthusiasts alike.