Numazu Deep Sea Aquarium specializes in the creatures of Suruga Bay, Japan's deepest bay. The aquarium regularly displays over 100 species of deep-sea creatures, including spider crabs and giant isopods. The adjacent Coelacanth Museum offers up-close views of two frozen coelacanths and three stuffed specimens preserved at -20°C. Visitors can also learn about the "unknown ocean" through deep-sea footage and specimens. This is the only place in the world where you can see frozen specimens.

It also offers a wide variety of entertainment options. Popular attractions include the VR "Deep Cruise," where you explore underwater ruins in a submarine, and the "Deep Sea World" ride, where you "capture" deep-sea creatures with lasers (separate fees apply), offering a fun experience for children and adults alike.

Located adjacent to the port's food and souvenir zone, "Minato 83 Banchi," the aquarium offers a full day of fun, including a stroll around the area and enjoying a meal.