Toba Aquarium Overview
Situated along the Toba waterfront in Mie Prefecture, Toba Aquarium is one of Japan’s largest and most celebrated marine facilities. Opened in 1955, it has grown into a sprawling complex housing over 1,200 species of marine life — one of the highest species counts of any aquarium in the world. Its location on the Shima Peninsula, overlooking the calm waters of Ago Bay, makes it a natural fit for a region deeply tied to the sea.
The aquarium is perhaps best known for being one of the very few facilities in the world to keep dugongs in captivity. These gentle, slow-moving marine mammals — closely related to manatees — are critically endangered, and Toba’s resident dugong has become something of a symbol for the aquarium. Alongside the dugong, visitors can encounter sea lions, finless porpoises, Japanese giant salamanders, sunfish and a remarkable variety of deep-sea creatures native to the waters around the Ise-Shima region.
The facility is organized into 12 zones, each dedicated to a different marine environment or species group. A particular highlight is the ama diver show, where traditional Japanese women divers — a practice unique to this coastal region — demonstrate their breath-hold diving technique in an open-air pool, connecting visitors to the area’s rich maritime heritage.
Best Times To Visit Toba Aquarium
Toba Aquarium is an indoor facility, making it a good option year-round regardless of weather. That said, visiting on weekdays outside of Japanese public holidays will mean smaller crowds and a more relaxed experience. The aquarium can get particularly busy during Golden Week (late April–early May), the Obon period (mid-August) and the New Year holiday season.