Unlike their cousin, the stingray, manta rays are completely harmless with their tiny teeth and dormant tail. Additionally, they have the largest brain-to-body ratio of any fish, making them arguably one of the smartest in the sea!
Both Stingrays and Manta Rays have flat body shapes and wide pectoral fins. Unlike Stingrays, Manta Rays do not have a barb, or stinger, on their tails. Additionally, Stingrays live on the floors of the ocean while Manta Rays inhabit the open ocean. The mouths of Manta Rays are on the front edge of their bodies while mouths of Stingrays are on the undersides of their bodies.