Top picks for Onna Water activities

Discover 7 Water activities in Onna on Trip.com, updated January 10, 2026, with experiences lasting from 1 to 6 hours. Find the perfect adventure for your day!

From NZD 55.94 per person, with an average total of NZD 92.04. Choose the option that suits your plan.

With 262 verified reviews, Water activities Onna boast an average rating of 4.9.

This week's most popular Water activities: "Japan Okinawa Blue Cave diving and snorkeling 2-hour experience [Blue Cave snorkeling/diving/English and Japanese instructors/shore entry, no seasickness]", with 260 reviews and a 4.8 rating.

Now on Trip.com: "Japan Okinawa Blue Cave diving and snorkeling 2-hour experience [Blue Cave snorkeling/diving/English and Japanese instructors/shore entry, no seasickness]", a 2-hour adventure in Onna!

The next available day tour departs on January 11, 2026. Book now to secure your spot!

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

85% of Onna Water activities now offer English-speaking guides

January is perfect for visiting Onna! Choose from Water activities available day tours, including seasonal hits like Japan Okinawa Blue Cave diving and snorkeling 2-hour experience [Blue Cave snorkeling/diving/English and Japanese instructors/shore entry, no seasickness].

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