Tri Nguyen Aquarium is situated on Bong Nguyen Island, also called Hon Mieu Island, Nha Trang Bay; half an hour from Cau Da Port, Nha Trang City, Khanh Hoa Province.
Characteristic: It is a lake on the sea which people dam up with stone embankment. Hundreds of nice and precious marine creatures are bred in the lake, looking a real marine museum.

Visitors may take a walk around the lake or seating on the house close to the edge of the water, they can see many kinds of colorful sea-fish that live in the clear blue water of the lake.

In the island also has Bai San Beach, one of the beaches that are attractive to many visitors.