Things to Do in Okinawa in 2026 – Tours & Activities | VELTRA Explore the wonders of the Churaumi Aquarium, one of Japan’s top marine attractions, located in northern Okinawa. Home to massive whale sharks and graceful manta rays, this world-class aquarium is a must-visit for families, couples, and ocean lovers. Choose from a variety of tours departing from Naha, Ginowan, Chatan, and Onna, including guided bus tours, combo passes, and convenient transportation options. Dive into Okinawa’s marine life and nearby attractions with ease and value!