Snorkel in the clear waters of the Blue Cave, located in the northern part of Ishigaki Island. Explore the cave and observe the natural products of Ishigaki such as limestone caves. Swim in the trench where many beautiful fishes and corals are waiting for you.

Be picked up from your hotel (only Southern Area) or Red Mail Post at Euglena Ishigaki Ferry Terminal and head to the Blue Cave. As the name suggests, the water inside the cave is clear blue, and if the conditions are met, it shines even bluer, reflecting the blue sky and the sun. Go ashore to explore the inside of the cave and observe the natural products of Ishigaki, such as limestone caves.

After exploring the cave, it is time for snorkeling. Swim in the trench where many beautiful fishes and corals are waiting for you. You will be amazed at the clarity of the ocean. If you are lucky, you may even see sea turtles.

Why Choose PiPi
PiPi is ranked the No.1* marine activity shop in Japan in 4 categories: annual participants, total reviews, annual sales, and number of employees. With over 500,000 guests guided, we make your ocean adventure safe and unforgettable.
PiPi is certified as an “Excellent Safety Marine Leisure Provider” by the Okinawa Prefectural Public Safety Commission, held by only about 3% of operators in Okinawa. All guides are certified water rescuers, so first-timers and families can join with peace of mind.

*No.1 claim: Market survey of marine activity shops (July 2026) by Japan Marketing Research Organization, June 29-July 3, 2026, covering 5 major companies. Criteria: (1) companies with a corporate website in the top 100 Google results for “marine activity” (extracted June 16, 2026); (2) consideration rate of 5%+ in a survey of 100 marine activity users (incl. free responses). Method: comparison of cumulative data based on public information and interviews; actual figures may differ. As of July 2026. Does not guarantee effectiveness or superiority.