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Okinawa Busena Marine Park Guide — Underwater Observatory & Glass-Bottom Boat Adventure

Sep 3, 2025 8 min read 783 52
Okinawa Busena Marine Park Guide — Underwater Observatory & Glass-Bottom Boat Adventure

What Is Busena Marine Park?

Busena Marine Park is a marine theme park located at Cape Busena (Busena-misaki) in Nago City, north-central Okinawa. Opened in 1970, it boasts over 50 years of history. Its two main attractions are an underwater observatory tower built 170 meters offshore and a glass-bottom boat that cruises over coral reefs. Since no swimming is required, it is especially popular with children, elderly visitors, and non-swimmers.

Busena Marine Park overview
Overview of Busena Marine Park at Cape Busena

Underwater Observatory Tower

The underwater observatory is the only underwater viewing facility on Okinawa's main island. You walk across a bridge to a tower standing on the sea, then descend a spiral staircase to approximately 5 meters underwater. Inside, 24 glass windows arranged in a 360-degree circle let you observe coral reefs and tropical fish swimming freely outside.

  • Depth: Approximately 5m below sea level
  • Windows: 24 panes (360-degree panorama)
  • Marine life: Clownfish, butterflyfish, damselfish, lionfish — approximately 200 species
  • Time needed: About 20-30 minutes
  • Weather: Best visibility on sunny days, but viewable even on cloudy days
View from underwater observatory window
Tropical fish and coral seen through the observatory windows

Glass-Bottom Boat

The glass-bottom boat features a transparent floor that lets you look down into the sea while cruising over coral reefs. The boat has a distinctive whale-shaped hull and sails around the shallow reef zone near Cape Busena for approximately 20 minutes.

DetailInfo
DurationAbout 20 minutes
Capacity36 passengers
DeparturesEvery ~20 minutes
FeaturesWhale-shaped hull, glass floor panels
Marine lifeCoral reefs, tropical fish, occasionally sea turtles
Glass-bottom boat boarding area at Busena
Glass-bottom boat boarding area and the beautiful Busena sea

Admission Fees & Combo Tickets

The observatory and glass-bottom boat can be enjoyed individually or as a combo, with the combo ticket offering about 20% savings.

FacilityAdultsHigh School/CollegeElementary/MiddleUnder 6
Observatory1,050 yen840 yen530 yenFree
Glass-bottom boat1,560 yen1,250 yen780 yenFree
Combo (both)2,100 yen1,680 yen1,050 yenFree
  • Combo savings: About 20% off compared to buying separately
  • Total time: About 1-1.5 hours for both experiences
  • Payment: Cash and credit cards accepted
Cape Busena beach
Crystal-clear emerald waters at Cape Busena

Hours & Closure Information

ItemDetails
HoursApr-Oct: 9:00-18:00 / Nov-Mar: 9:00-17:30
Last entry30 minutes before closing
HolidaysNone (open year-round)
ClosuresTyphoons, high waves, or strong winds: both facilities close
Weather checkCall ahead recommended (0980-52-3379)
  • Rainy days: The observatory is viewable in rain (you're underwater)
  • Glass-bottom boat: May be suspended in rough seas — check beforehand
  • Best season: May to September for maximum water clarity
Underwater observatory tower exterior
The underwater observatory tower standing over the sea

2000 G8 Summit & The Busena Terrace

Cape Busena is famous as the venue for the 2000 G8 Summit (Kyushu-Okinawa Summit). The Busena Terrace, where world leaders stayed during the summit, continues to operate as one of Okinawa's premier luxury resort hotels.

  • G8 Summit: Held July 21-23, 2000
  • Participants: USA, UK, France, Germany, Italy, Canada, Japan, Russia
  • Bankoku Shinryokan: The main summit conference hall, now a convention facility
  • The Busena Terrace: 5-minute walk from the marine park. Non-guests can use restaurants and cafes
G8 Summit 2000 group photo
Group photo from the 2000 G8 Summit held at Busena

Access & Nearby Attractions

TransportDetails
Rental car~1.5 hours from Naha (via Okinawa Expressway). Free parking
BusFrom Nago Bus Terminal, Route 20/120 ~15 min, alight at "Busena Resort Mae"
Shuttle busFree shuttle between parking lot and observatory, every ~20 min (25 passengers)
  • Nago Pineapple Park10 minutes by car. Pineapple tasting and winery
  • Churaumi Aquarium30 minutes by car. Great combined day trip
  • Cape Manzamo20 minutes by car. Famous cliff-top scenery
Busena Beach
Beautiful Busena Beach near the marine park

Basic Information

ItemDetails
FacilityBusena Marine Park
Address1744-1 Kise, Nago, Okinawa 905-0026
Phone0980-52-3379
Hours9:00-18:00 (Apr-Oct) / 9:00-17:30 (Nov-Mar)
ParkingFree
Websitebusena-marinepark.com
Busena Terrace panorama
Panoramic view of Cape Busena — The Busena Terrace Resort

FAQ

Q. Can I visit if I can't swim?

A. Yes. Both the observatory and glass-bottom boat let you enjoy the sea without entering the water. Perfectly safe for children, elderly visitors, and non-swimmers.

Q. Observatory or glass-bottom boat — which is better?

A. Both are wonderful, but the combo ticket for both is recommended. The observatory provides an up-close underwater view, while the boat offers a wide aerial perspective of the reef.

Q. Is it okay on rainy days?

A. The observatory is underwater, so rain has little effect and remains open. The glass-bottom boat may be suspended in rough seas.

Q. Can I visit Churaumi Aquarium on the same day?

A. Yes. They're only 30 minutes apart by car, making a combined day trip ideal. We recommend the marine park in the morning and the aquarium in the afternoon.

Q. Is it suitable for young children?

A. Very much so. Free for children under 6, stroller-accessible, with shuttle bus service — ideal for family trips.

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