InformationOpen: 9:00 - 17:00 (Last entry 16:00)
11月14日(火)~2月29日(木)の主な平日は、冬季営業時間 9:00~16:00(最終入場15:00).
*Excluding December 12th to 25th and January 29nd to 1th during winter vacation.
  • There are no regular holidays depending on the day of the week.
  • The museum is closed for maintenance in June and December.
    Closed days in December 2023: December 12th (Monday) to December 12th (Friday)
  • We will be open during the year-end and New Year holidays.
  • Business hours may change depending on the season and circumstances.
  • During the Golden Week period, the summer vacation period, etc., there may be cases where admission is limited to a specified date and time with a web ticket.

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