Air Fills
Scuba tank air fills for local and visiting divers. Give us a call before you come by to make sure someone's in.
South Padre Island, Texas
American Diving
South Padre Island's original dive shop — open since 1985. Air fills, tank service, and gear, plus guided snorkel trips on the Laguna Madre every summer.
Established 1985
Open Year-Round
The Shop Is Still Open
American Diving has wound down its offshore dive charters, but the shop on South Padre Island is still here for the essentials — and guided snorkel trips run all summer. Hours vary seasonally, so it's best to call ahead.
Tank Inspection & Testing
Annual visual inspections (VIP) handled in-house. Hydrostatic testing is sent out and returned so your cylinders stay fill-ready.
Gear & Equipment
Masks, fins, snorkels, and a selection of scuba and snorkel equipment for sale. Stop in to see what's in stock.
Snorkel Trips
Guided snorkel trips on the calm Laguna Madre, Memorial Day through Labor Day — great for all ages and first-timers.
Snorkeling details →Call ahead: (956) 761-2030 · info@divesouthpadre.com
33256 State Park Rd 100, Suite 104, South Padre Island, TX 78597
American Diving no longer runs scuba dive charters, offers certification courses, or services regulators and gear.
Est. 1985
Born from the Deep
In 1985, Captain Tim O'Leary made a decision. He walked away from the commercial diving industry — the offshore contracts, the saturation dives, the technical work — and opened a sport diving center on a barrier island at the southern tip of Texas.
There wasn't much there. A stretch of Gulf Coast that most of the country drove past without stopping. Waters that serious divers didn't talk about. No dive community to speak of.
Tim built one anyway.
What followed was forty years of introducing divers of every level to the beautiful, demanding, and genuinely rewarding waters of the Gulf of Mexico. From first-time open water students to technical wreck divers pushing depth limits — American Diving trained them all, equipped them all, and took them all offshore.
Diving the Gulf of Mexico is not for sissies.
Tim O'Leary knew that better than anyone.
He also knew it was worth every bit of the effort.
The Captain
Captain Tim O'Leary
Tim O'Leary didn't just run a dive shop. He was — and remains — one of the most credentialed technical divers in the United States. A USCG 100-Ton Master, former NAUI Technical Operations Director, and co-author of thirteen manuals on decompression science, Tim brought world-class expertise to a small shop on South Padre Island and shared it with anyone willing to show up.
He holds a B.S. in Zoology from Texas A&M, has dived the North Sea, Mediterranean, South Pacific, Asia, and throughout the Americas — as both a commercial diver and a technical instructor trainer. He taught closed circuit rebreathers for military applications. He contributed to the NAUI RGBM decompression tables. He is a member of the Undersea Hyperbaric Medical Society and an Admiral in the Texas Navy.
When American Diving said "when you are given the go ahead, you are not just certified — you are qualified," they meant it. Every briefing, every certification, every dive carried the weight of that experience.
- NAUI Technical Operations Director
- NAUI Course Director
- USCG 100-Ton Master
- Commercial Diving Instructor
- IANTD Mixed Gas Instructor
- DAN O2 Instructor Trainer
- Diving Medical Officer
- PSI Inspector Trainer
- 13 decompression manuals
- Admiral, Texas Navy
Captain Diane O'Leary
Vice President and Instructor, Diane O'Leary was a deep gas diver on both open and closed circuit systems — a NAUI Instructor Trainer, NAUI Technical Diving Instructor, and USCG 100-Ton Master in her own right. She was the first woman to dive the USS Perry on a deep gas expedition. Diane holds a B.A. in Journalism from Arizona State University and speaks German, Spanish, and English.
The Vessel
The M/V Diver I
The M/V Diver I is the heart of American Diving's operation. A 50-foot USCG-inspected vessel built for serious offshore work. Air-conditioned cabin, indoor and outdoor seating, fresh water shower, onboard restroom, and a dive platform positioned inches above the waterline for easy entry and exit. She's still in service today, carrying snorkelers on the Laguna Madre and overflow dolphin-watch groups through the summer.
She went to the Texas Clipper. She went to the Aquarium. She carried open water students on their first ocean dives and technical divers on deep gas expeditions. And in 1988, when the dive calendar had a slow stretch, she carried something else entirely.
1988
How the Dolphin Watch Was Born
In 1988, during a slow stretch between dive charters, Tim O'Leary did what any resourceful captain does — he improvised. He took visitors out on the Diver I to watch dolphins in the Laguna Madre.
It was supposed to fill time.
It didn't stay that way. What started as a side hustle on a dive boat became one of South Padre Island's most beloved activities. The dolphin watch grew, evolved, moved to a dedicated vessel, and eventually became its own operation.
That offhand decision in 1988 is now the main event.
I Snorkel trips and dolphin watches continue today under The Original Dolphin Watch — the same waters, the same spirit, the same commitment to showing people what lives just offshore.
40
Years in Operation
1985
Year Founded
9+
Named Dive Sites
136
Feet to the Clipper
Forty Years of Gulf Diving
American Diving built a dive portfolio unlike anything else on the Texas Gulf Coast. Explore the sites that defined a generation of Gulf divers.
The Texas Clipper
A 473-foot warship turned luxury liner turned maritime training vessel — reefed in 2007 and now Texas's premier dive site.
Read the full story →Rigs & Wrecks
Iron Islands, named wrecks, jack-up rigs — four decades of diving the underwater landscape of the Gulf of Mexico.
Explore the sites →Guided Snorkel Tours
Running every summer. American Diving's guided snorkel trips on the calm Laguna Madre, Memorial Day through Labor Day — for all ages and first-timers.
Snorkeling details →Stop By the Shop
American Diving is still on South Padre Island for air fills, tank inspection and hydro, and gear — and guided snorkel trips run all summer on the Laguna Madre. Hours vary seasonally, so call ahead before you come by.