Incredible Caves Where You Can Swim and Dive

Brazil's Chapada Diamantina National Park 

Brazil's Chapada Diamantina National Park is known for its Waterfalls and Caverns with Colorful Pools. One of these Pools is Poco Azul (or the Blue Well), A Flooded Cave where Visitors can swim in Crystal-Clear Waters or glide around the remains of Old Submerged Trees, still in excellent condition, according to Atlas Obscura.  

Piccaninnie Ponds Conservation Park in South Australia

Diver and Photographer Liz Rogers observes a fellow diver as she explores the Cathedral and the Chasm, Part of Piccaninnie Ponds cave system in the Piccaninnie Ponds Conservation Park in South Australia and one of the country's top diving locations. The water is so clear here that there is a spot where it is possible to look up from 98 feet down and see clouds in the blue sky above. 

Island of Vis in Croatia, the 'Green Cave

Located near the Island of Vis in Croatia, the 'Green Cave' is one of two popular 'colorful' cave destinations in the area (the Blue Cave is also worth a visit). The Green Cave, accessible by boat, is known for for the visible green beam of light that penetrates through the opening on its roof and breaks on the sea surface, making it a Unique Place for Swimming and Snorkeling.

The Grotto, Saipan 

With clear waters and an impressive diversity of Sea Life, Saipan is known for its incredible Scuba Diving Sites. Most famous of these dive spots is The Grotto, a collapsed underwater cave. Divers sometimes encounter Turtles, White Tip Sharks and Clown Triggerfish on this Dive.  

Marieta Islands, Mexico 

One of the Most Popular Attractions in Puerto Vallarta in Mexico is the stunning 'hidden beach' in the Marieta Islands. The site was formed by a collapse of the Volcanic Rock that makes up the Island. Over time, a Cave was created by the Sea and Visitors have to swim through the Tunnel in the Cave to access the Beach.

Blue Cave, Island of Kastellorizo, Greece

The Most Popular Attraction in the Island of Kastellorizo, Greece, the Blue Cave is known for its Dazzling Turquoise Color, created by light of the Sun, which is refracted through the Sea and reflected in the Interior. There Cave is accessible by Small Boats, which take Visitors to the Site for a Swim in the Clear Waters.