Hi Jennjo,
the nearest Scuba diving centre is just over the hill in Agios Georgios, if you decide you want to dive there they will come & collect you from your accomodation, & drop you off again after. I'm afraid I don't have any contact details but if you ask around I'm sure someone will put you in touch with Vasilis, the very nice man that works at the centre, try Arkarkol travel or Arillas travel, I'm sure they'll be able to help,
Carol2