Limestone7 sites4 countries

Dive sites: Limestone

Limestone dive sites — depth, conditions, and required training level.

Canada

Fathom Five National Marine Park

Tobermory · Ontario · Canada

Canada's first national marine conservation area in Lake Huron's Georgian Bay, where crystal-clear freshwater preserves over twenty historic shipwrecks from the 19th century amid dramatic limestone cliffs and cold-water biodiversity.

Japan

cave

Miyako Blue Cave

Miyako-jima · Okinawa · Japan

A stunning limestone cave system on Miyako Island where shafts of blue light penetrate through openings in the reef ceiling, creating ethereal illumination effects in clear subtropical water surrounded by healthy coral reef.

Malta

cave

Blue Hole (Gozo)

Dwejra · Gozo · Malta

Natural limestone arch and chimney formation. Shore-entry cave dive with spectacular light effects.

Thailand

wall

Bida Nok

Koh Phi Phi · Krabi · Thailand

A dramatic limestone island south of Phi Phi with sheer walls plunging to 28 metres, famous for leopard sharks resting on sandy ledges and dense fields of sea fans on its vertical faces.

Koh Haa Lagoon

Koh Lanta · Krabi · Thailand

A sheltered lagoon enclosed by five limestone islets south of Koh Lanta, offering caverns, swim-throughs, and pristine coral walls in crystal-clear Andaman Sea water with reliable year-round visibility.

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.