 The long snout of the sixgill stingray is very flexible both vertically and horizontally , suggesting that the ray uses it to probe for food in the bottom sediment . The underside of the snout is covered by well @-@ developed ampullae of Lorenzini arranged in longitudinal rows , which are capable of detecting the minute electric fields produced by other organisms . The mouth can be protruded downward farther than the length of the head , likely allowing the ray to extract buried prey . The jaws are poorly mineralized , suggesting that it does not feed on hard @-@ shelled animals . There is a record of a specimen with a wound from a cookiecutter shark ( Isistius brasiliensis ) . Reproduction in the sixgill stingray is viviparous , with documented litter sizes of between two and five pups . Newly born rays measure around 48 cm ( 19 in ) long . Both males and females mature sexually at approximately 1 @.@ 1 m ( 3 @.@ 6 ft ) long . 
