From Hakata Station, take the train from Kashii Station, get off at Umino Nakamichi Station, and walk for about 10 minutes. I bought a Fukuoka Tourist Pass to save the train fee and get a 20% discount when purchasing an admission ticket, so I bought an admission ticket for 1840 yen. It takes about 2 hours to see the dolphin and see the aquariums by theme. It was smaller than the aquariums in Seoul or Busan. It is better to check the admission time of the dolphin and watch it. When you go, you can take the subway and return to Hakata Port by ferry. However, the ferry cannot use the tourist pass. You have to pay a separate fee. If you have time, it's good to visit Marine World and see the marine park.