Our Group

The SEASIR group

SEASIR isn’t just a diving center in Okinawa.

Not only do we have a diving shop in the Philippines (Cebu), but we also operate marine activity shops, an equipment store with its overhaul center, a travel agency and even a hotel in Aka island and a guesthouse located in Naha.

We all work as one to turn your trip into an unforgettable one.

Marine Club BERRY

Specialized in water activities such as snorkeling, parasailing, fly board, kayaking, and a variety of jet activities.
Water sports novices and families with young children are more than welcome!

Uminchu store

We provide a wide range of products from diving gear to swimwear, flip-flops and underwater cameras.
Try out our original brand, “Sea people”!  


An international hostel nestled in Tomari port’s bay.
Its prime location and free car park makes it an ideal stay for tourists visiting the Kerama islands.
Come by and enjoy our spacious living room and kitchen!
Our newly made co-working space will let you enjoy the view on the harbour.


An online travel agency catering to foreign travelers and specialised in tailoring trips for groups.
Accommodation, transport, activities, guided tours, interpretation service, etc.
Let’s make your dream trip in Okinawa a reality!