In the Mainichi News, there is a section called WaiWai--where racy stories are run. 

Today's edition has a story called "Testicles and tentacles".  Anyone who has ever read manga or watched anime know in some of the more adult versions, tentacles are featured quite a bit.  Now I know why....

It never occurred to me that people would assault a manta in such a manner.  Or any other sea creature (a sea anemone?!).  Geez, people can be weird.