Ishigaki Island "Phantom Island" Landing & Snorkeling | 3.5-Hour Half-Day Boat Tour

A pure white island with not a single building, visible only when the tide goes out

The star of this tour is Hamajima, better known as "Phantom Island," a sandbar off the coast of Ishigaki Island that only appears when the tide recedes. With no buildings and no trees, this slender strip of pure white sand is surrounded on all sides by a 360-degree ring of emerald blue sea.

Once you step ashore, you'll have time to explore and take photos. With nothing but blue sky, white clouds, and clear ocean to work with, almost any angle makes for a stunning shot. Include a person in the frame for scale, and you'll capture just how vast the island truly feels.

Because this tour runs only when the tides allow, the shape and width of the sandbar changes depending on the time of your visit, even at the same location. Standing on "an island that exists only at this moment, today" is part of what makes this experience so special.

Setting off from a long-established shop on Ishigaki Island

This tour is operated by a local Ishigaki Island diving shop founded in 2002, with over 20 years of experience. The shop holds certifications from the YDA Yaeyama Diving Association, the Okinawa Safety accreditation for safety-conscious operators, and PADI Diving Resort status, ensuring solid safety management throughout.

At check-in, staff will brief you on the day's sea conditions, tide timing, and the flow of the experience. Showers and changing rooms are available, and towel rentals are provided, so you can travel light.

Once you're ready, you'll head out by boat. There's no need to walk far—the boat takes you quickly to waters where tropical fish gather. Since the whole experience wraps up in half a day, it's easy to combine with sightseeing or other plans.

By boat to crystal-clear waters

After exploring Phantom Island, you'll board the boat again and head to a carefully chosen snorkeling spot. The water here is remarkably clear, with the sandy seafloor and coral formations visible even from the surface.

Entry into the water is guided by an instructor, who will carefully walk first-timers through how to use the snorkeling gear. Since participants aged 3 and up can join, families with young children can enjoy the water together.

Once you're floating on the surface wearing a life jacket and fins, all that's left to do is breathe steadily and take in the view. Even if you're not a confident swimmer, simply floating and peering down into the water becomes the heart of the experience.

Coral reefs and tropical fish, up close beneath the surface

The waters around Phantom Island are home to coral reefs teeming with vividly colored tropical fish. As soon as you put your face in the water, you'll spot schools of fish swimming by and small fish hiding among the coral crevices.

For those who want to explore deeper, a trial diving option is also available. An experienced instructor accompanies you throughout, so no license is needed to enter the underwater world.

The sun-dappled shallows also make for great underwater photography. The shimmer of the surface seen from below through your mask offers a completely different view from what you saw on land. Experiencing two entirely different kinds of stunning scenery—from above and below the water—in the same location is what makes this half-day tour so rewarding.

What to check before booking

• The tour's start time, which depends on tidal conditions that day
• The location and access to the shop where you'll gather
• Whether to choose the snorkeling or trial diving plan
• The minimum age requirement (3 years and up) and conditions for children
• That the tour is guided in Japanese and run in a group format
• The full 3.5-hour schedule
• What to bring and wear, including swimwear and sun protection
• How towel rental, showers, and changing rooms work
• Cancellation or rescheduling conditions in case of bad weather or rough seas
• Pricing (from ¥10,600) and the latest availability

Because Phantom Island changes shape with the tide, the tour's start time varies from day to day. Please plan the rest of your schedule with some flexibility. Be sure to check the latest pricing and plan details before booking.

In summary

Ishigaki Island's "Phantom Island Landing & Snorkeling/Trial Diving" tour combines a landing on Hamajima—a sandbar that appears only at low tide—with snorkeling or trial diving in the surrounding waters, all within a 3.5-hour half-day experience.

The tour is operated by a long-established local diving shop founded in 2002, certified by the YDA Yaeyama Diving Association, the Okinawa Safety accreditation for safety-conscious operators, and PADI Diving Resort. With participants aged 3 and up welcome, and showers, changing rooms, and towel rentals all available, it's an accessible experience for first-timers and families alike.

You can check availability and book via this booking page. Please confirm the latest schedule, pricing, and plan details before booking.