Tsukumi Dolphin Island is a participatory leisure facility based on the concept of "playing with dolphins in an 'ocean aquarium' utilizing the bay." It offers dynamic dolphin performances and hands-on animal interactions.

Tsukumi Dolphin Island's setting is an 'ocean aquarium' utilizing the bay. The close-up jumps from the circular deck offer a truly immersive experience, with even the splashes of water visible, making for excellent photo opportunities. Detailed explanations of the animals' care are also provided, allowing visitors to enjoy learning about the ecology of marine life. This is a participatory leisure facility where visitors can experience dynamic dolphin performances and hands-on animal interactions.

A wide variety of interactive programs are available, including "Play with Dolphins!", where you can shake hands and signal with the dolphins; "Snap with Dolphins!", where you can take commemorative photos; and "Swim with Dolphins!", which is popular among serious visitors.

There are also exhibits of penguins, sea turtles, and fish, and the facility is compact and easy to navigate, even for families with small children.