Opening hours

Opening hours9:00 - 17:00 (Last entry 16:00)

Open at nightNIGHT AQUA WORLD(held every Saturday)please use this form..

  • There are no regular holidays depending on the day of the week,Maintenance closed daysWednesday, June 2024, 6 - Thursday, June 26, 27, Monday, December 2024, 12 - Friday, December 2, 6] is available. Please be careful when visiting the museum.
  • We will be open throughout the year-end and New Year holidays.
  • Business hours may change depending on the season and circumstances.
  • During busy seasons, admission may be limited to a specified date and time using a web ticket. Please check the notification page in advance.

please note
*No smoking inside the aquarium.Please smoke in the smoking area in the large bus parking lot (near the outdoor toilet).
*Pets are not allowed to enter, except for service dogs such as guide dogs.We are unable to keep pets, so we ask for your cooperation.

About crowded days

In a normal year, the area is expected to be crowded on weekdays from May to June and weekdays from September to October due to excursion groups from elementary and junior high schools, kindergartens, nursery schools, etc.
We ask for your understanding in advance.


311-1301 Isohama-cho, Oarai-cho, Higashiibaraki-gun, Ibaraki Prefecture 8252-3
Tel: 029-267-5151 [Voice guidance] Fax: 029-267-5920