Nassarius Dance

[EQCM2B]

Can anyone tell me what my Nassarius snails are doing? Here lately I will see one of my Nassarius snails holding another Nassarius and spinning it back and forth. I don't know how long this last but I know that it least a couple of minutes. At first I thought they might be fighting but it does not appear that the one that is being spun about is harmed nor is it a hurry to get away. Is this possibly some type of mating or are they just fighting for turf?

 

[RicksReefs]

the one doing the spinning is just trying to get the other off his back, they're not fond of providing a free ride to their cousins..

 

[ugination87]

is the "tounge" attached?