Top Experiences and Travel Essentials in Onna

Discover 68 Water activities in Onna on Trip.com, updated September 26, 2026, with experiences lasting from 1 to 4 hours. Find the perfect adventure for your day!

From €21.94 per person, with an average total of €33.34. Choose the option that suits your plan.

With 307 verified reviews, Water activities Onna boast an average rating of 4.7.

This week's most popular Water activities: "Snorkeling/diving at the Blue Cave in Okinawa, Japan: shore entry (no seasickness) | Non-swimmers welcome", with 281 reviews and a 4.8 rating.

Now on Trip.com: "2 hrs scuba diving + snorkeling at the Blue Cave in Onna, Okinawa | Non-swimmers welcome", a 2-hour adventure in Onna!

The next available day tour departs on September 27, 2026. Book now to secure your spot!

Onna Water activities usually take about 2 hours — perfect for a relaxed, immersive experience!

90% of Onna Water activities now offer English-speaking guides

September is perfect for visiting Onna! Choose from 68 available day tours, including seasonal hits like Snorkeling/diving at the Blue Cave in Okinawa, Japan: shore entry (no seasickness) | Non-swimmers welcome.

Your trip, worry-free! All day tours are run by licensed suppliers with verified reviews, and many include free cancellation before departure.

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68 results for Onna Water activities

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Reviews/Trip Moments

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Reviews: Snorkeling/diving at the Blue Cave in Okinawa, Japan: shore entry (no seasickness) | Non-swimmers welcome
Guest User2026-08-08
We went snowdiving, and the instructor kindly explained everything. We also added GoPro recording on the spot (highly recommended!!). They show Korean YouTube videos for basic explanations. I was worried because the instructor only spoke English and Japanese, but surprisingly, there were no communication issues. Since it was our first time, they took extra care of us, so we were able to enjoy a safe and fun dive!
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Reviews: [Departing from Onna] About 10 minutes to the point! Easy access by boat! Snorkeling & cute fish at the blue cave / experience diving
Guest User2026-08-03
Very fun experience. We are not experienced in snorkeling and the team took good care of us. We felt very well taken care of. Highly recommend for children too. The cave is a little full but worth it.
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Reviews: 2 hrs scuba diving + snorkeling at the Blue Cave in Onna, Okinawa | Non-swimmers welcome
Guest User2026-07-17
There was a field to enter a Line or WhatsApp ID when booking, but I didn't receive any separate contact. It felt like it was just for emergency contact. When you arrive at the meeting point, the counter staff immediately confirms your reservation and prepares for snorkeling. The staff were all cheerful and great. There were already plenty of fish, but they scattered some food once, and the fish practically enveloped me! However, since there are only outdoor showers and changing rooms, it wasn't possible to take off all clothes and shower immediately after swimming. You can only rinse with water, dry yourself off, and change clothes.
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Reviews: 4-Hour Blue Cave Scuba Diving/Snorkeling Experience in Naha, Japan [Naha/Chatan Pickup & Drop-off] Boat Transfer for Blue Cave Snorkeling/Scuba Diving Experience
Guest User2026-07-15
Please note that diving is not possible on the day you are flying back! Snorkeling is possible. This information was not mentioned in the notes on this website as of July 2014. The transfer staff were very kind, and the activities were excellent.

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Classic 1-day tour to northern Okinawa Okinawa South Bus: Shurijo, Okinawa world & more Blue cave snorkeling with equipment, optional diving/snorkeling1-day tour to Okinawa north - Churaumi Aquarium, Cape Manzamo, Kouri Island and American VillageOkinawa Blue Caves, Japan [Meet at Onna Village, Experience diving/Snorkeling|diving equipment providedOkinawa: Blue Cave Private Snorkeling Hotel Pickup AvailableOkinawa blue cave diving half-day tour · optional snorkeling/diving/shore entry no seasickness About 10 minutes to the point! Easy access by boat! Snorkeling & cute fish at the blue cave / experience divingGet a coupon and save instantly | Northern Okinawa Churaumi Aquarium | Small group of 9 people available | Guaranteed departure1-day tour to Okinawa Churaumi aquarium, Busena marine park and Cape Manzamo: small group of 6-9 peopleSnorkeling and scuba diving experience at the blue cave in Okinawa, Japan Okinawa sightseeing bus: Tropical Botanical Garden + Kouri Island + Cape Manzamo + American Village 1-day tour1-day tour in northern Okinawa with Cape Manzamo, aquarium and Kouri island Okinawa Blue Cave Diving Half-Day Tour: English/Japanese Instructors/Equipment Included/Shore Entry No SeasicknessHalf-day tour to Okinawa blue cave with self-assembly - optional scuba diving/snorkeling from OnnaOnna ActivitiesOnna SIM CardOnna SurfingWater Activities in OnnaOnna Day ToursOnna Flight ExperienceOnna TransportationOnna Spa & MassageThings to do in ShanghaiThings to do in BeijingThings to do in Hong KongThings to do in OsakaThings to do in ZhangjiajieThings to do in SingaporeThings to do in ChongqingThings to do in TokyoThings to do in GuangzhouThings to do in Xi'anThings to do in ChinaThings to do in JapanThings to do in ThailandThings to do in VietnamThings to do in South Korea