The aquarium is physically located on a floating structure in the ocean, allowing it to use natural sea water for its enclosures.
The name 'Sea Donut' refers to the circular, ring-shaped design of the floating walkway and viewing areas.
It offers a rare 'swim with dolphins' program that takes place in a sectioned-off area of the natural bay.
The facility serves as a marine education center focusing specifically on the biodiversity of the Ariake and Yatsushiro Seas.
The location is famous for the nearby pearl cultivation history, which is the namesake for the surrounding resort area.
Sea Donut Aquarium, located on the Pearl Line in Kamiamakusa, is an offshore aquarium built on a floating facility. It features interactive dolphin encounters where visitors can swim or interact with dolphins in a natural sea enclosure. The facility houses a variety of marine life endemic to the Amakusa archipelago, including local fish species and sea turtles. The aquarium is integrated into the larger Pearl Center complex, which includes commercial facilities and pearl-related shops. The primary attraction is the ability to observe and touch marine animals in an open-water environment rather than traditional tanks. Its design allows for natural light and direct tidal flow, maintaining the water quality for the animals.
The outdoor floating walkway offering a 360-degree view of the surrounding Amakusa islands.
Check the dolphin interaction schedule upon arrival as these sessions are tidal and weather-dependent.
Wear footwear that is comfortable for walking on metal or wooden floating walkways.
Bring a change of clothes if you plan to participate in the water-based dolphin encounters.
Assuming dolphin encounters are available walk-in; they often require advanced reservation or confirmation upon arrival.
Open daily, though interaction programs may be suspended during high-tide storms or adverse weather conditions.
Do not touch the animals unless under the direct supervision of staff; remove shoes if entering designated barefoot interaction zones.
