where are the horseshoe crabs most widely distributed
The mangrove horseshoe crab, Carcinoscorpius rotundicauda, is a chelicerate arthropod found in marine and brackish waters. Despite its name, it is more closely related to spiders and scorpions (all are in the subphylum Chelicerata) than to crabs.It is the only species in the genus Carcinoscorpius.The mangrove horseshoe crab occurs only in Asia and can be found in India, Indonesia, Malaysia, the Philippines, Singapore, Thailand and Hong Kong. There are four extant species of horseshoe crab.he mangrove horseshoe crab is benthopelagic, spending most of its life close to or at the bottom of a body of their brackish, swampy water habitat, such as mangroves. This is the habitat for which it gains its common name: mangrove horseshoe crab.