A Ray Without a Tail.

BIEPA was sent these two videos and asked about the survival prospects of a ray without a tail.
Information at hand is that the tail is used for defence only.

These rays sometimes come close to shore to find food in the shallows of the high tide, such as pippies, crabs, worms, etc. 

We are waiting on more information from the Queensland Museum’s ichthyologist and from Sealife in Mooloolaba.  

If anyone has any information to offer that would be good.