PADI - Professional Association Of Diving Instructors

  ANDI - American Nitrox Divers International

  TDI/SDI - Technical Diving International / Scuba Diving International

  E.O.Y.Δ.A.A.T.K. - Ελληνική Ομοσπονδία Υποβρύχιας Δραστηριότητας

  CMAS - World Underwater Federation

  BSAC - British Sub Aqua Club

  IANTD - International Association of Nitrox and Technical Divers

  IAHD - International Association for Handicapped Divers

  IDEA - International Diving Educators Association

  SSI - Scuba Schools International