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Group of people snorkeling inside the illuminated blue waters of a cave

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The Blue Cave & Reefs

The Blue Cave and its surrounding reef offer distinct zones for snorkeling and scuba diving.

Photo: tour listing on Viator

Most visitors start at the cave entrance before moving into the 30-meter cavern. Advanced divers can also explore the deeper reef walls further off the coast.

Depths around the cave range from 2 to 12 meters. A mandatory life jacket is required if you snorkel independently.

Two people snorkeling underwater seen through a bubble ring
Photo: tour listing on Viator
01

Inside the Blue Cave

30 mins30m long

This is a 30-meter-long natural sea cavern. Sunlight reflects off the white limestone ocean floor to create a glowing blue light. The blue glow is strongest when you look back toward the entrance from deep inside the cave.

Two snorkelers floating on their backs forming a V-shape in Blue Cave
Photo: tour listing on Viator
02

Cave Entrance & Shallow Reef

30 minsDepth: 2-12m

Highly transparent water surrounds the area just outside the cave. This shallow reef holds tropical fish that are very accustomed to divers. Many tour guides bring fish food here to attract large schools right to your mask.

Air bubbles rising towards the surface in deep blue underwater environment
Photo: tour listing on Viator
03

Maeda Drop-off

45 minsDepth: 30-40m

This steep reef wall sits further out from the cave entrance. It plunges to depths of 30 to 40 meters. Advanced scuba divers come here to explore deep crevasses and spot larger marine life.

Popular Snorkeling Tour

Blue Cave in Okinawa with glowing blue water and rocky cave walls
[Okinawa Blue Cave] Snorkeling with Private Guide+ Free Photos2 h 30 min 4.9 (194)from $37
snorkeling with free photosfrom $37 on Viator
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