Ocean Expo Park, Motobu, Okinawa Main Island
Okinawa Main Island's premier family beach — a pristine crescent of emerald-blue water and white sand inside the world-renowned Ocean Expo Park, with excellent facilities and the Okinawa Churaumi Aquarium next door.
Location
Ocean Expo Park, Motobu, Okinawa Main Island
Best For
Families, Snorkeling, Combined Attractions
Water Temp
24–29°C (May–Oct)
Admission
Free (park entrance free; aquarium separate)
From Naha
~2 hrs by expressway
Facilities
Full facilities, lifeguards, snorkel hire, restaurants
Emerald Beach is widely considered the finest beach on Okinawa's main island — a 600-metre crescent of brilliant white-coral sand enclosed in the northern reaches of the Motobu Peninsula, within the grounds of Ocean Expo Park. The park was constructed for the 1975 Okinawa International Ocean Exposition, and Emerald Beach has since been maintained to exceptional standards. The beach is one of only a handful in Japan to consistently receive Blue Flag certification for water quality, safety, and environmental management.
The water here is a vivid emerald-turquoise — true to the beach's name — and offers safe swimming and excellent snorkeling. The reef directly off the beach is home to tropical fish and occasional sea turtles. A shallow sandy lagoon near shore is perfect for younger children, while the outer reef edge provides more interesting snorkeling for confident swimmers. Lifeguards are on duty throughout the swimming season, and snorkel gear, floats, and beach umbrellas are available for hire.
The main draw of combining Emerald Beach with Ocean Expo Park is the proximity to the Okinawa Churaumi Aquarium — Japan's largest aquarium and one of the most celebrated in the world, famous for its enormous main tank containing whale sharks and manta rays. The park also includes the Tropical Dream Center (botanical gardens), the Oceanic Culture Museum, and beautiful sunset viewing points overlooking the sea. This makes Emerald Beach the centrepiece of a rich full-day or two-day northern Okinawa itinerary that appeals to every age group.
Rent a car from Naha (recommended — 2 hrs north on Route 58 or expressway). Express buses from Naha Bus Terminal to Ocean Expo Park take around 2.5 hrs. The park has free parking. A beach shuttle runs within the large park complex. Car is best for exploring all of northern Okinawa.
June to October for swimming. July–August is peak season with the best weather and most active beach, though it can be busy. April and May are excellent for fewer crowds with water warming up. The park and aquarium are worth visiting year-round regardless of swimming conditions.
Arrive early to secure a good beach spot in summer (park opens at 8am). Plan to visit the Churaumi Aquarium either before or after the beach — allow 2–3 hours inside. The park's Tropical Dream Center garden is spectacular. Good restaurants are in the park and in Motobu town nearby.