Indonesia's Wakatobi islands offer some of the best macro diving in the world, with an array of rare and unique sea creatures like pygmy seahorses and ghost pipefish.
The Great Blue Hole in Belize is a massive underwater sinkhole that offers a challenging and thrilling diving experience, with depths reaching over 400 feet.
The Azores Islands in Portugal offer the chance to dive with resident pods of dolphins, as well as the unique opportunity to explore underwater geothermal vents and volcanic formations.
The wrecks of Truk Lagoon in Micronesia are a treasure trove for wreck diving enthusiasts, with over 60 sunken ships from World War II lying in the lagoon's depths.
The marine park of Sipadan in Malaysia offers some of the best wall diving in the world, with steep drop-offs and diverse marine life, including sea turtles and schools of barracuda.
The Kelp Forests of Monterey Bay in California offer a unique diving experience, with towering underwater forests of giant kelp and a diverse array of marine life like sea otters and sea lions.
The Zenobia wreck off the coast of Cyprus is one of the largest and most intact shipwrecks in the world, with the opportunity to explore the ship's cargo holds and machinery rooms.
The marine park of Bunaken in Indonesia is home to over 390 species of coral and more than 3,000 species of fish, making it a top destination for underwater photographers.
The Andaman Islands in India offer some of the most pristine and untouched diving sites in the world, with crystal-clear waters and diverse marine life.