Japan Sea’s Largest Aquarium! Recommended Spots at Marinepia Nihonkai

Located in Nishi-ku, Niigata City, Niigata Prefecture, “Marinepia Nihonkai” is one of the largest aquariums on the Japan Sea side and a hugely popular tourist attraction in the prefecture. With about 600 species and 30,000 specimens on display, you can see a wide variety of marine life from the sea and the Shinano River up close. From dolphin shows and penguin shows to special exhibits that captivate both children and adults, there is never a dull moment at this attraction. Marinepia Nihonkai is divided into 10 zones, each with its own charm. Below, we introduce some of the recommended spots within the aquarium.

1. Dolphin Stadium

At the “Dolphin Stadium,” daily shows feature Bandō dolphins and Commerson’s dolphins. This spot is highly recommended for its powerful performances, where you can also enjoy fun explanations about their ecology and abilities. One must-see moment is when the dolphins make a huge leap toward a ball set 6 meters high. There are also opportunities to interact with the adorable dolphins.

Since the spectator area is covered, you can watch the show even on rainy or snowy days. In addition, an indoor pool is located next to the show pool, so you can see the dolphins swimming freely indoors. In winter or during inclement weather, the show may be held in the indoor pool. Enjoy this impressive performance that lasts about 15 minutes.

■Show Times:
Weekdays & Saturdays: 11:00, 12:30, 14:00, 15:30
Sundays & Holidays: 10:30, 11:30, 13:00, 14:00, 15:30

2. Penguin Coast

“Penguin Coast” is the area where the endangered Humboldt penguins are on display. Marinepia Nihonkai houses about 70 penguins. You can observe them leisurely on land as well as see them swimming swiftly in the water! Marinepia Nihonkai is also putting effort into breeding them, and nesting boxes are set up on the land. Depending on the timing, you may even catch a glimpse of baby penguins.

At Penguin Coast, a penguin interpretation show is held twice daily. It’s a fun way to learn about their ecology and natural habitat while enjoying their adorable antics. In summer through autumn, the show is held at the coastal pool, and in winter through spring, along the penguin promenade, so you can see slightly different behaviors depending on the season.

■Show Times:
Daily: 11:30, 13:30

3. Japan Sea Large Tank

Spanning from the B1F to the 1F, the “Japan Sea Large Tank” is one of Marinepia Nihonkai’s most popular attractions. Here, you can see about 40 types of fish native to the Japan Sea. The tank recreates the sound of waves with artificial rocks and wave generators to simulate the real sea. A tunnel runs beneath the tank, giving you the feeling of strolling underwater.

In addition, on a sloping area, fish that inhabit the shallow sea are displayed. In the adjacent area, environments such as the Kuroshio/Tsushima Current and the habitat of the Shinano River are recreated, along with a mesmerizing jellyfish corner. In front of the large tank, a daily explanation about the Japan Sea Large Tank is held. This clear and engaging presentation explains the displayed organisms and tank management, so if you’re interested, it’s well worth joining!

■Explanation Times:
Weekdays & Saturdays: 13:45
Sundays & Holidays: 10:00, 13:45

4. Marine Safari

Adjacent to the Dolphin Stadium, “Marine Safari” lets you observe walruses, California sea lions, and spotted seals. The area is two-tiered, so you can view them from both the water’s surface and underwater. You can see them resting on land or artificial rocks as well as actively swimming about.

At Marine Safari, daily feeding demonstrations are held where you can watch the walruses eat while learning about their physiology. There’s also a performance where the sea lions touch the caretaker’s hand with their flipper-like feet, showcasing their cleverness. The feeding demonstration lasts about 15 minutes, making it a quick and enjoyable experience.

■Feeding Explanation Times:
Weekdays & Saturdays: 10:30, 14:30
Sundays & Holidays: 11:00, 14:30

5. Niigata Field

“Niigata Field” is an outdoor area designed to mimic the environments of sand dune lakes, small streams, and rice fields typical of the shallow water areas of Niigata City. It is adjacent to the Penguin Coast. This area was set up with the hope of both promoting the natural breeding of native freshwater fish and sparking visitors’ interest in the rural landscape.

In the wetland environment, endangered freshwater fish such as Kitano medaka, Akahire Tabira, and Hotokedojō are on display. Additionally, within the area, there is a Field Small Box containing specimens of plants and fruits collected from the zone, offering a chance to observe plant ecology. It’s a spot that has a natural park-like atmosphere.

6. Recommended Souvenirs

At the entrance, you’ll find the “Museum Shop Marinepia Heart,” which is open even without museum admission. Here, you can buy a wide range of original items such as cute stuffed toys, snacks, stationery, and miscellaneous goods. These original products make for great personal keepsakes or souvenirs. Here are a few recommended items:

Original Can Badges…5 types available, each for 260 yen

These can badges, featuring popular animal designs like dolphins and otters, are extremely popular souvenirs. They come with safety pins and clips for easy attachment.

Original Tote Bag – Penguin…Priced at 1,100 yen

A cute tote bag featuring illustrations of a Humboldt penguin family. It’s an A4-sized bag with ample storage and is popular for its simple design and practicality.

Original Chocolate Sablé…A set of 5 pieces for 450 yen

These sablés contain original Marinepia chocolate, with cute illustrations of penguins and seals on the packaging. An eraser is included as a bonus, making it especially popular with children.

Finally: Access to Shiroi Koibito Park

If accessing from JR Niigata Station, it takes about 20 minutes by bus or taxi. From the Bandai exit, please take the "Niigata Kōtsū-sen Bus, Route C22 Aquarium Line." There is also a free parking lot that can accommodate 750 vehicles, and it is accessible in about 25 minutes from Niigata Chūō IC, Niigata Nishi IC, Niigata Kameda IC, or Niigata Higashi Smart IC.

In addition, nearby tourist attractions include the Niigata-ken Gokoku Shrine, renowned for its beautiful pine grove scenery; the NSG Art Museum, which exhibits works by Japanese painter Shukusanpō; and the market "Pia Bandai," where you can buy and sample fresh seafood. Be sure to visit these as well.

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Japan Sea’s Largest Aquarium! Recommended Spots at Marinepia Nihonkai