Kerama Islands: A Snorkeling Paradise Wrapped in Kerama Blue

The Kerama Islands, about 40 kilometers west of Okinawa main island, are a marine paradise designated a national park in 2014. The blue sea called Kerama Blue, with clarity among the finest in the world, is truly another world. In the rich sea where colorful coral reefs, tropical fish, and sea turtles live, you can enjoy a moving underwater world through snorkeling and diving. Seeking one of Okinawa most beautiful seas, many people visit these popular remote islands.

The Sea of Kerama Blue

The sea of the Kerama Islands is called Kerama Blue for its beauty and captivates divers and snorkelers from around the world. The remarkably clear sea shows gradations of blue from deep blue to emerald green. Water so clear that the seabed is visible even in deep places is a superb sight. In recognition of this rich natural environment, in March 2014 the islands and surrounding waters were designated Kerama Islands National Park. An unforgettable, mysterious blue sea spreads out here.

A Rich Underwater World

The charm of the Kerama sea is not only its beautiful blue. Colorful coral reefs spread across the seabed, and colorful tropical fish swim in schools around them. A charm of Kerama is that even with snorkeling you can easily enjoy this rich underwater world from the surface. If you are lucky, you may encounter sea turtles, and seeing one swim gracefully up close is a special thrill. Known also as a coral spawning ground, this life-filled sea is truly a paradise for marine creatures.

Enjoying the Kerama Islands

The Kerama Islands consist of islands such as Tokashiki, Zamami, and Aka. Each has beautiful beaches, and the contrast of white sand and blue sea is breathtaking. You can visit on a day trip, but staying overnight lets you enjoy starry skies and quiet, less-crowded beaches. Known also as a base for whale watching, in winter (roughly January to March) you may observe humpback whales. From marine activities to a relaxed island pace, you can spend your time as you like.

Practical Travel Notes

• Ferries and high-speed boats run to each island from Tomari Port in Naha. Since seats and services are limited, book your boarding early in the busy season
• The Kerama sea is also a protected area for coral and sea turtles. Follow sea manners such as not touching or standing on coral, not approaching sea turtles too closely, and choosing environmentally considerate sunscreen
• Ferries may be canceled due to sea conditions. For a day trip, always check the last service time and plan with a margin
• With a snorkeling tour that includes a life jacket, even beginners can feel safe, and you can enjoy it even if you are not a confident swimmer

Best Season and Access

The best season for snorkeling and diving is from spring to autumn (especially summer), when the sea is calm and warm. In winter you can enjoy whale watching. Access is by ferry or high-speed boat to each island from Tomari Port in Naha. There are many day tours you can easily join. Joining a marine-activity tour lets even beginners enjoy it safely. In the Kerama Blue sea, with clarity among the finest in the world, be sure to savor a moving snorkeling experience and beautiful island time.

📚 Sources

This article draws on information published by the Ministry of the Environment, which oversees Kerama Shoto National Park, along with tourism guidance from local governments such as Tokashiki and Zamami villages and sailing information from the ferry operators serving Tomari Port (Tomarin). References to the national park designation and the protection of coral and sea turtles follow materials from the Ministry of the Environment and local guidance. Ferry frequency, operating status, and tour content vary with sea conditions and season, so please confirm details on the official websites of the operators and tour providers before visiting.

Visitor Checklist

• Estimated time: Ferries and high-speed boats depart from Tomari Port in Naha. A day trip works, but staying overnight lets you enjoy quiet beaches and starry skies.
• What to prepare: Snorkeling tours include life jackets, so beginners can relax. Choose reef-friendly sunscreen.
• Booking: Seats and sailings are limited, so reserve boarding early during peak season.
• Getting around: Tokashiki, Zamami, and Aka islands each have beautiful beaches you can combine on your trip.
• Sea etiquette: Do not touch or stand on coral and do not approach sea turtles too closely, following the rules of the protected area.
• Checking sailings: Ferries may be cancelled in rough seas, so always confirm the last departure and allow a comfortable schedule.