Scientific Name: Rhina ancylostoma
IUCN status: Critically endangered
It is found in the tropical waters of Indo-Pacific region at a depth of 10-300 feet. It is seen mainly on sea floor but sometimes seen in mid water, it usually prefers sandy or muddy region, coral reefs, near rocks and shipwrecks. It is nocturnal and also known as territorial, mainly feeds on bony fishes, crustaceans, bivalves and cephalopods.
This species is threatened due to habitat destruction mainly by blast fishing, bleaching of corals, fishing them for commercial purpose like shark fin soup and consumption of flesh and in Thailand the thorns of this species is used to make bracelets.