A vibrant reef site along the dramatic Makarska coastline where iron-rich red rock formations host dense Mediterranean marine life beneath the towering Biokovo mountains.

Depth30M

Levelintermediate

Entryboat

Currentmild

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reef

Brbinjscica Bay

Zadar · Zadar County · Croatia

A pristine bay on the eastern coast of Dugi Otok island in the Zadar archipelago, where dramatic underwater cliffs, Posidonia meadows, and rocky reef support diverse Adriatic marine life in exceptional visibility.

Curacao

cave

Blue Room Cave

Willemstad · Banda Abou · Curacao

A stunning sea cave on Curacao's northwest coast where sunlight enters through a submerged opening and refracts into an electric blue glow, creating one of the Caribbean's most photogenic underwater experiences in a compact, accessible cavern.

French Polynesia

reef

Anau Manta Point

Vaitape · Leeward Islands · French Polynesia

A shallow coral garden inside Bora Bora's iconic lagoon where manta rays glide over white sand channels between coral heads, framed by the dramatic silhouette of Mount Otemanu.

Greece

reef

Zakynthos - Navagio Area

Zakynthos Town · Ionian Islands · Greece

Diving beneath the towering white cliffs of Shipwreck Beach on Zakynthos, exploring underwater caves, blue holes, and Mediterranean reef teeming with life.

Japan

cave

Okinawa Blue Cave Cape Maeda

Naha · Okinawa Prefecture · Japan

A sea cave on Okinawa's western coast where sunlight refracting through the underwater entrance creates an ethereal blue glow inside the cavern, accessible to snorkellers and divers alike and home to colourful tropical reef fish and marine crustaceans.

Malaysia

reef

Pulau Dayang Bunting

Kuah · Kedah · Malaysia

A marble geopark island south of Langkawi where unique geological formations continue underwater, creating reef-draped marble boulders and swim-throughs in warm Andaman Sea waters alongside the famous Lake of the Pregnant Maiden.

Montenegro

cavern

Blue Cave Lustica

Herceg Novi · Lustica Peninsula, Bay of Kotor · Montenegro

A mesmerising sea cave on Montenegro's Lustica Peninsula where sunlight refracts through an underwater entrance to create an electric blue glow, surrounded by pristine Adriatic reef.

Philippines

reef

Shark Fin Bay

El Nido · Mimaropa · Philippines

A sheltered bay near El Nido named for its distinctive fin-shaped karst rock, offering pristine coral gardens, resident reef sharks, and reliable turtle sightings amid dramatic limestone scenery.

Coron Twin Lagoons

Coron Town · Palawan · Philippines

Two connected limestone lagoons on Coron Island where divers pass through a narrow underwater passage between towering karst walls, experiencing dramatic thermoclines and haloclines in crystal-clear water of shifting blues and greens.

St. Lucia

reef

Anse Chastanet Reef

Soufriere · Soufriere · St. Lucia

A shallow reef beneath the dramatic Pitons, with barrel sponges, seahorses, and easy shore access from a volcanic beach.

Thailand

reef

Ang Thong Marine Park

Koh Samui · Surat Thani · Thailand

A protected archipelago of 42 limestone islands west of Koh Samui where sheltered reefs between dramatic karst formations harbour healthy coral gardens, reef sharks, and sea turtles in the Gulf of Thailand's most scenic marine park.

Emerald Cave (Tham Morakot)

Trang · Trang · Thailand

A 80-metre sea cave on Koh Mook that opens into a hidden lagoon of emerald water surrounded by sheer limestone walls, offering a unique swim-through dive combining total darkness with a spectacular cavern emergence into tropical light.

Tonga

cave

Swallows Cave

Neiafu · Vava'u Group · Tonga

A cathedral-like sea cave on Kapa Island where shafts of sunlight pierce the water, creating an ethereal underwater light show.

United States

cavern

First Cathedrals

Lahaina · Hawaii · United States

A spectacular lava tube cavern off Lanai's south shore where shafts of sunlight pierce through ceiling openings, creating an ethereal cathedral effect that makes this Hawaii's most iconic cavern dive.