In 1966, PADI was founded by John Cronin and Ralph Erickson. Erickson developed continuing education scuba courses during this time and wrote the initial issue of the first trade magazine for scuba instructors,
The Undersea Journal. Cronin got the idea for PADI's Positive Identification Card at a trade show. PADI established the
Master Scuba Diver certification, the industry's first certification awarded for accumulation of specified certification and experience, and not based on a specific training program, The organisation published the
Encyclopedia of Recreational Diving in 1988. In 1989, PADI founded
Project AWARE to help conserve underwater environments. In 1992, Project AWARE Foundation became a registered nonprofit organization with an environmental mission and purpose. PADI AWARE information has been integrated in most courses and divers are offered the chance to exchange their normal certification card for an AWARE-certification card by making a donation to the program when sending in their application for a new certification. In 2006, PADI was severely criticized by a
Coroner's court in the United Kingdom for providing what experts regarded as short and insufficient training. Although PADI training standards differ from those formerly prevalent in the United Kingdom under the
BSAC system, PADI training standards are consistent with
World Recreational Scuba Training Council standards. On 9 August 2012, Lincolnshire Management and Providence Equity Partners jointly acquired PADI from Seidler Equity Partners. In 2015, Providence Equity Partners acquired majority stake of PADI from Lincolnshire Management. In 2017, Providence Equity Partners LLC sold PADI to Canadian investment firm
Altas Partners and French private equity firm
Florac for 700 million USD, through an entity called Mandarin fish Holding. In 2018, PADI launched PADI Travel, an online dive travel resource and booking platform for dive resort and live-aboard packages. In 2021, PADI reported it had a membership of over 128,000 professional members and 6,600 dive centers, and had awarded more than 28 million diving certifications internationally. PADI operates in 186 countries and territories. In 2025, Canadian investment firm
Altas Partners and French private equity firm
Florac sold PADI to a undisclosed owner. ==Training system==