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Phu Quoc Island is a tropical island located off the coast of southern Vietnam in the Gulf of Thailand. The island stretches approximately 49 kilometers long and up to 25 kilometers wide. It was once a popular spot for pearl farming but today it's a renowned destination for snorkeling, diving, and eco-tourism due to its rich marine biodiversity and vibrant coral reefs. Divers visit Phu Quoc Island to explore the underwater world of colorful fish, sea fans, and soft corals at depths ranging from 5-30 meters. The island is also home to several shipwrecks and artificial reefs created by local fishermen.

The Great Astrolabe Reef, located off the coast of Kadavu Island in Fiji, is Fiji's largest barrier reef system. This vast coral system encircles Kadavu and Ono islands, creating a sheltered lagoon and a dramatic drop-off known as the Great Wall. Historically, the reef has been a vital resource for the local Fijian communities, providing sustenance and protection. Divers are drawn to the Great Astrolabe for its unparalleled biodiversity, with healthy hard and soft corals supporting a dazzling array of marine life. Encounters with large pelagics like manta rays, sharks, and turtles are common, alongside vibrant schools of reef fish. The sheer scale and pristine condition of the reef make it a premier diving destination, offering both shallow reef exploration and thrilling deep dives along its precipitous walls. Its remote location contributes to its well-preserved state, ensuring an unforgettable underwater experience.

Ohirase is a coastal diving location situated on the eastern coast of Honshu Island in Japan. The site features a unique combination of temperate coral reefs and rocky formations, attracting divers seeking to explore an unusual marine ecosystem. Located near Ito City, Ohirase has been a popular spot for recreational diving since the 1980s due to its accessibility, clear waters, and diverse marine life.

Vortex Spring, a private dive site in Ponce de Leon, Florida, offers clear freshwater at a constant 72°F (22°C). Its large cavern reaches about 55 feet deep, primarily for certified cavern and cave divers. Amenities include picnic areas, a concession, and camping. Divers enjoy over 100 feet of visibility, exploring the main cavern's formations and advanced passages. "The Vortex," a mysterious deep shaft, adds further exploration. Its accessibility and facilities make it ideal for training, recreation, and photography for appropriately certified individuals.

The Scilly Islands are a group of five inhabited islands located off the southwestern tip of Cornwall in England. The largest island is St Mary's, followed by Tresco, St Martin's, Bryher, and St Agnes. The islands have a rich history with evidence of human settlement dating back to prehistoric times, including ancient burial sites. Today, the Scilly Islands are a popular destination for divers due to their crystal-clear waters, diverse marine life, and numerous shipwrecks. Divers may encounter a variety of species, including blue sharks (seasonal visitors), grey seals, dolphins, and porpoises.

Albufeira is the largest resort on the Algarve, on Portugal's south coast, and its golden sandstone cliffs continue underwater as ledges, gullies and caves. A short boat ride offshore, an artificial reef of concrete modules was laid in the early 2000s and has been thoroughly colonised. Several dive centres in the town and its marina run boat dives along this coast from spring to autumn.

Puerto Varas, situated on the southern shores of Chile's stunning Llanquihue Lake, offers a unique freshwater diving experience. This picturesque city, known for its German heritage and dramatic views of the Osorno Volcano, attracts divers seeking a different kind of underwater exploration. The lake's clear waters, though cool, reveal a submerged world shaped by volcanic activity and past human settlements. Divers can explore remnants of old structures and natural formations, observing the diverse aquatic life that thrives in this environment. The region's history is intertwined with early European colonization, and remnants of this past can sometimes be found beneath the surface. The accessibility and relative tranquility of Puerto Varas make it an appealing destination for both novice and experienced divers looking to discover the secrets of Chile's largest lake entirely within its borders.

The Great Barrier Reef is the world's largest coral reef system, stretching more than 2,300 kilometres along the northeast coast of Queensland, Australia. The Marine Park contains over 2,900 individual reefs and around 900 islands and covers approximately 344,400 km². It supports a vast array of marine life — over 1,500 species of fish and roughly 400 species of coral — and much of the modern reef framework formed within the last 6,000–8,000 years. Divers visit to explore vibrant coral gardens, encounter turtles, rays and sharks, and experience diverse reef habitats.

Cork Harbour is a significant natural harbour in County Cork, Ireland, offering a diverse range of diving opportunities. Historically, it has been a vital port and naval base, leading to the presence of various wrecks, from historical sailing vessels to more modern military craft, attracting wreck enthusiasts. The harbour's geography includes sheltered areas and more exposed outer reaches, catering to different skill levels. Divers visit Cork Harbour to explore its rich maritime history, encounter marine life such as seals, conger eels, and a variety of fish species, and to experience the unique underwater environment shaped by tidal currents and the confluence of freshwater from the River Lee with saltwater. The waters in certain sections provide good visibility for exploring the submerged artifacts and natural reefs.

Pender Island is a small island located off the coast of British Columbia, Canada. The island has a history of settlement and maritime activity dating back to the late 1800s and early 1900s, serving as a local hub for pioneers and a stop for inter-island ferries. Today, Pender Island is a popular destination for outdoor enthusiasts, with its rugged coastline featuring numerous dive sites including kelp forests, shipwrecks, and underwater rock formations.

Corfu Marina Cove is a sheltered diving spot located in the southeastern part of Corfu Island Greece. This picturesque cove offers calm and clear waters perfect for exploring underwater life. The site features an abundance of marine life including groupers sea bream and mullet. Divers can expect to see schools of small fish swimming amidst the remains of old boats and sunken rocks. The seafloor is relatively flat with some scattered rocks and weed-covered areas providing hiding spots for various species.

Nha Trang, a coastal city in Vietnam, is a premier diving destination renowned for its vibrant coral reefs and diverse marine life. Situated on the south-central coast, it boasts a sheltered bay that protects dive sites from strong currents, making it suitable for divers of all levels. Historically, Nha Trang has been a significant port and cultural center, with its underwater ecosystems now a major draw for eco-tourism. Divers flock to Nha Trang to explore sites like Hon Mun Island Marine Protected Area, famous for its rich biodiversity including numerous fish species, moray eels, and occasional sea turtles. The clear waters offer excellent visibility, revealing colorful soft and hard corals. The geography of the area features a continental shelf with varying depths, providing a range of dive experiences from shallow reefs to deeper walls. Its accessibility and well-developed dive infrastructure, including numerous reputable dive centers, further enhance its appeal.

Isla Wolf (Wolf Island) is a remote, uninhabited island in the northern Galápagos, famed for prolific pelagic life—especially large schools of scalloped hammerhead sharks. Its steep volcanic pinnacles and strong currents concentrate predators such as Galápagos sharks and manta rays. Sightings of tiger sharks and whale sharks are rare. Access is by liveaboard and dives are suited to experienced divers comfortable with strong currents and drift techniques.

Maafushi, a vibrant island in the South Malé Atoll, Maldives, offers a compelling blend of local culture and exceptional diving. Historically a fishing island, Maafushi has transformed into a popular tourist destination for budget-conscious travelers, retaining its authentic Maldivian charm. Its geographical advantage provides easy access to diverse dive sites in the atoll, renowned for rich marine biodiversity. Divers are drawn to Maafushi for its proximity to sites like Kandooma Thila, a protected marine area teeming with sharks, rays, and reef fish, and Guraidhoo Corner, famous for currents attracting pelagic species. Other sites include Biyadhoo Reef, known for coral gardens and turtles, and channels/pinnacles offering encounters with manta rays and whale sharks seasonally. The island boasts beautiful beaches and a lively atmosphere, an ideal base for exploring Maldivian underwater wonders.

Reykjavik Harbour provides an accessible and distinct urban diving experience in Iceland's capital. While not surrounded by natural volcanic rock formations, the harbour's environment, shaped by both nature and human activity, offers a glimpse into local marine life adapted to these conditions. It's a niche site appreciated by divers interested in cold-water urban exploration and the interaction between the bustling city and its underwater surroundings.

The MV Karwela Wreck, a former ferry, was deliberately sunk off the coast of Gozo, Malta, in 2006 to create an artificial reef and dive site. This impressive wreck lies upright on the seabed at a depth of approximately 40 meters, with its highest point around 25 meters, making it accessible to both advanced open water divers and technical divers. Its strategic location provides shelter from currents and is teeming with marine life, including groupers, barracudas, and various reef fish, attracting divers for its excellent penetration opportunities, dramatic structure, and vibrant ecosystem.

Western Rocky (Western Rocky Island) is an isolated rock in the far south of the Mergui (Myeik) Archipelago, about 50 km west of Kawthaung, and is the first or last stop on most liveaboard itineraries out of Myanmar's southern port and Ranong in Thailand. Its signature is a tunnel roughly 30 m long that passes beneath the island from one side to the other, surrounded by walls, pinnacles and soft-coral-covered rock.

Koh Tao Southwest Pinnacle is a renowned dive site located off the southwestern tip of Koh Tao Island in the Gulf of Thailand. The pinnacle rises approximately 20 meters from the seafloor to just below the surface, creating an incredible topography that attracts marine life from far and wide. This location is particularly famous for its strong currents that sweep through, bringing with them a multitude of pelagic species including sharks, rays, and tuna. As you descend into the crystal-clear waters, you'll encounter a stunning array of coral formations, schools of colorful fish, and an abundance of invertebrates like sea fans and soft corals.

Koh Haa ('five islands') lies in the Mu Koh Lanta National Park, about 25 km west of Koh Lanta and reachable by day boat from Lanta, Phi Phi and Krabi. The islets ring a shallow turquoise lagoon and drop steeply into deeper water on their outer sides; Koh Haa Yai holds the Cathedral, a large cavern with two chambers and an air pocket, and the group has several tunnels and swim-throughs.

Located off Las Grutas in Río Negro province, the local wreck sites consist of small-to-medium vessels and coastal debris that now serve as temperate artificial reefs. Typical dive depths range from about 8 to 30 metres. The area is accessed from San Antonio Oeste / Las Grutas and is characterized by cool water temperatures, seasonal variability in visibility and occasional currents. Marine life is temperate Atlantic in character (hake, anchovy, rock-associated fish, octopus, crustaceans and encrusting invertebrates). Dive operations run guided shore and boat dives when conditions permit.