Manta Ray and Shark Observation Tour in a Sea Pen

Observe the living things bred at the Okinawa Churaumi Aquarium Research Center!




 Observe breeding and enjoy a unique experience with staff guidance on manta rays, sharks, and other rays in the fish-pen in marine waters, the research center of the Okinawa Churaumi Aquarium.

View nature from a boat floating on a beautiful sea. This is a lifetime experience with the unique creatures of Yanbaru. 


Discover the powerful action of manta rays!

Get close-up photography of manta rays!

Enjoy the nature of Okinawa on the ship!

Date of implementationAll year round


*The tour may be subject to change due to weather conditions on the day or manta rays's condition. Thank you for your understanding. 


 1st Tour / 10:30 to 11:45

 2nd Tour / 14:30 to 15:45


*Please check-in 15 minutes before departure. 

*The journey on the boat lasts about 50 to 60 minutes. 


Five minutes to the fish-pen

Departure Point: Yamakawa Port in Motobu-cho


*Address: Yamakawa, Motobu-cho, Kunigami District, Okinawa

*Adjacent to Kakinouchi Beach


Capacity: Up to 10 people.   *Preregistration is required. 


Participants: 5 years old and older.   *From 5 years old to Elementary school students require  an accompanying parent. 


Booking: Online at the OSC website *Please apply by 17:00 on the day before joining. 


Rates: 4,000yen - High school students and adults

       3,200yen - From 5 years old to Elementary and junior high school students


*5% discount for visitors staying in Motobu-cho

Guests in Motobu-cho

Rates: 3,800yen - High school students and adults

       3,000yen - From 5 years old to Elementary and junior high school 


*Method of payment: Cash (Japanese yen) only 

Confirmation for tour participation

- Please check-in 15minutes before depature on the day. 

 *When searching "Mantayasame" on the Google map, the route to the Yamakawa port is displayed. 

- There is no toilet in "Yamakawa port". Therefore, please use the toilet before you come to port. 

In case of cancellation of tour, we will contact you as soon as possible. 

- Depending on sea conditions, the boat may sway so please do not wear heels or shoes with thick soles such as platform shoes. 

- The shipboard is slippery. So you better wear slippery shoes. 

- The tour takes about 50 to 60 minutes. If you easily get seasick, we recommend you take motion sickness medicine. 

The tour may be subject to change due to weather conditions on the day or manta rays's condition. Thank you for your understanding.  

- In case of cancellation, you can participate in another day tour. Check availability, expiration date is one year. 

- Please contact OSC Co., Ltd., if you have any questions about the tour. 


Application for tour is here

*Please select the participation date from the below


Tour features

- Guidance on the nature in Okinawa and Yanbaru, the role and mechanism of the fish pen, and other creatures. 

- Observe the living things in the fish pen from the boat. 

- Feeding of sharks, rays, and other fish. 

- Observing the feeding of manta rays (Photography OK). 

- Commemorative photo of the fantastic sea and Ie Island. 

- Gift of booklet "Wonders of Sharks" issued by the Okinawa Churaumi Aquarium. 


Full of new discoveries!

Gift of booklet "Wonders of Sharks"!


Scenery of the sea pen