1. DEEPSPOT - 45m (150 ft)

Mszczonów, POLAND

DEEPSPOT is currently the deepest swimming pool in the world – featuring a depth of 45.5 meters, which is nearly 150-feet deep. The pool holds 8,000 cubic meters of water, which is more water than 25 Olympic-sized swimming pool.

It was created for all people who dream of equipment diving – Scuba Diving or freediving, but have never tried it, as well as beginners and professionals who care about the comfort of warm, clean water and safe conditions for training.
The pool will also be used by firefighters and the military during their training.

“Its like a kindergarden for divers”.

DEEPSPOT also features manmade underwater caves, Mayan ruins, and a reproduction of a shipwreck. It’s open to visitors as well and includes a hotel with underwater views, a tunnel for spectators, and a restaurant.

Opening Date: November 2020

Cost: $8.9 million euros ($10.7 million USD) and took two years to build.

Website: https://www.deepspot.com/en/

2. Y-40 “Deep Joy” - 42m (138 ft)

Montegrotto Terme – ITALY

The Y-40® pool, called “Deep Joy”, allows divers to descend up to 42.5 meters. More than 4,000 cubic meters of water are maintained between 32 and 34 ° Celius at all depth levels allowing visitors to experience diving in the best possible conditions.

The Guinness® World Record on the opening day, June 5 2014, recognized it as the deepest pool in the world.

The incredible pool, designed by renowned architect Emanuele Boaretto, is located within the four-star Hotel Terme Millepini in Montegrotto Terme, Italy.

Y-40® is a safe abyss for professional exercises, the ideal environment to train for different water experiences. Several groups of armed forces, Army Corps and auxiliaries, voluntary associations have found in Y-40® the right field for underwater and speleo-underwater education aimed at the safety and rescue of the person.

The 4 rooms in Y-40®, the spacious hall, that can be set up, and the 2 rooms at Hotel Terme Millepini, including the representative one with 280 seats, are available and perfectly set up for all companies looking for spaces for meetings, presentations, team building, conferences, making the external terraces and the submerged tunnel available to

Opening Date: June 2014

Architect: Emanuele Boaretto

Cost: Estimated $1 billion and took one year to build.

Website: https://www.y-40.com/en/

3. NEMO33- 42m (138 ft)

Brussels, BELGIUM

The NEMO 33 maximum depth is 34.5 meters (113 ft). It contains 2,500,000 liters of non-chlorinated, highly filtered spring water, maintained at 30 °C (86 °F) by a solar heater, and holds several simulated underwater caves at the 10 meters (33 ft) depth level. Due to the warm temperature in the pool, divers can dive for extended periods without a dry suit. The complex was designed by Belgian diving expert John Beernaerts as a multi-purpose diving instruction, recreational, and film production facility in 2004.

Nemo 33 has 5 diving pits adapted to the level of each diver, from beginner to professional divers.


Opening Date: May 2004

Architect: John Beernaerts

Cost: 3.2 million euros ($3.8 million USD)

Website: https://www.nemo33.com/en/

Finding a new scuba diving buddy that you can trust for your next underwater adventure is now possible.

Special Mention -
Biggest Scuba Diving Pool Coming Soon

BLUE ABYSS - 50M (160 ft)


Blue Abyss is a research pool planned for construction on the Wirral Peninsula, Merseyside in the United Kingdom. It will be 50 meters (160 ft) deep with a volume of approximately 42,000 cubic meters (1,500,000 cu ft), making it the world’s deepest pool upon its expected completion in 2021.

The Blue Abyss pool will be used for training and development for commercial diving, space exploration, human life science, and submersibles. This pool could aid in reducing risk in extreme environments, including space and the sub-aquatic.

  • A multi-layered pool
  • Sliding roof to facilitate insertion of larger objects into the pool
  • Astronaut training center
  • Hypobaric and hyperbaric chambers
  • Microgravity suite
  • Training center with six classrooms
  • Diving quality compressed gas supply (air and nitrox)
  • Secure workshops, lay down areas and storage
  • Onsite catering
  • Hotel

Opening Date: Spring 2021

Architect: Robin Partington

Cost: Estimated $150 million 

Website: http://blueabyss.uk/

About The Author

Anthony Laverty

Anthony Laverty

Anthony is a professional scuba diver, company owner and blogger. He has spent the last 10 years travelling around the world collecting stories and diving new locations.

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