Osaka Aquarium Kaiyukan

About this Attraction

Osaka Aquarium Kaiyukan is one of the largest and most spectacular aquariums in the world, located in the Tempozan Harbor Village near Osaka Bay. Designed to take visitors on a journey through the diverse habitats of the Pacific Rim, Kaiyukan features 15 themed tanks representing the "Ring of Fire" — from the icy waters of Antarctica to the tropical zones of the Great Barrier Reef. The highlight of the aquarium is the massive central Pacific Ocean tank, where majestic whale sharks, manta rays, and schools of colorful fish glide through crystal-clear waters in a mesmerizing underwater dance.

What makes Kaiyukan truly unique is its architectural layout. Visitors follow a spiral ramp around the central tank, descending gradually as they witness marine life at different depths. Along the way, you’ll encounter playful otters, penguins, jellyfish, dolphins, and even giant spider crabs. The aquarium also features a touch pool where guests can interact with rays and small sharks — a favorite among families and children.

A special experience awaits those who visit in the evening, as the aquarium transforms into a Night Aquarium. With mood lighting and calming music, the exhibits take on an entirely new ambiance, perfect for a relaxed and romantic stroll. Open daily from 10:00 AM to 8:00 PM (last entry at 7:00 PM), the facility offers amenities such as free Wi-Fi, gift shops, and multilingual signage. Credit cards are accepted at all major counters.

Whether you're a marine enthusiast or simply looking for a fun and educational family outing, Osaka Aquarium Kaiyukan offers an unforgettable encounter with the wonders of the ocean — right in the heart of one of Japan’s most vibrant cities.