Usual hours and prices, checked 2026-10-05 against the sources under “What this place is”. They can change for holidays and events — confirm before you go. Official site
Our guide
Aqua World Oarai, formerly the Ibaraki Prefectural Oarai Aquarium, stands north of Oarai port at the mouth of the Naka River in Ibaraki. It covers 19,800 m² and puts sharks at the centre of its displays: 59 kinds of shark live here, alongside many other marine species. It is accredited as a museum-equivalent facility under the Museum Act.
Entry fees vary by age; we have not checked current fees or opening hours. Nakaminato Station on the Minato Line is about 1.5 km away in a straight line, and Oarai Isosaki Shrine about 2 km.
Written by japan-spots.com (2026-09-22) from the sources credited on this page. Distances are straight lines between map positions.
Photos
Photos from Wikimedia Commons, each under its own licence — see credits
- Aquaworld Oarai — Y440 · CC BY-SA 3.0 · source · resized
- Mola mola at Aaua world Oarai — Miyuki Meinaka · CC BY-SA 4.0 · source · resized
- Aqua World — Jennie Kondo (Jennie Valdivieso Kondo - Grialte) · CC BY-SA 3.0 · source · resized
- Mola alexandrini specimen — Totti · CC BY-SA 4.0 · source · resized
- Oncorhynchus masou without parr mark 2 — Totti · CC BY-SA 4.0 · source · resized
- Oncorhynchus masou without parr mark 1 — Totti · CC BY-SA 4.0 · source · resized
- Tribolodon hakonensis Oarai — Totti · CC BY-SA 4.0 · source · resized
- Sphyrna zygaena in a tank — 出羽雀台 · CC BY-SA 4.0 · source · resized
- Sphyrna zygaena in a tank .Ⅱ — 出羽雀台 · CC BY-SA 4.0 · source · resized
What this place is
Aqua World (アクアワールド・大洗, Akua Wārudo Oarai), formerly the Ibaraki Prefectural Oarai Aquarium (茨城県大洗水族館, Ibaraki-ken Oarai suizokukan), is a 19,800 square metres (213,000 sq ft) aquarium in the Higashiibaraki District of Ibaraki Prefecture, Japan, north of Oarai port at the mouth of the Naka River. The aquarium focuses on displaying sharks, and 59 types of sharks live in the aquarium. Many varieties of marine species can be found in Aqua World. The fee for entry varies according to age group. The aquarium is accredited as a Museum-equivalent facilities by the Museum Act from Ministry of Education, Culture, Sports, Science and Technology.
Visitor information checked: 2026-10-05 · 営業案内 | アクアワールド茨城県大洗水族館【公式】 · 入場料金 | アクアワールド茨城県大洗水族館【公式】
Background text from Wikipedia (CC BY-SA 4.0)
What to expect at this type of place: Aquarium
Nearby station
Nearby station: Nakaminato (Minato Line), about 1.5 km from the spot in a straight line.
Worked out on 2026-09-14 from this place’s map position, using HeartRails Express station data and station names from Wikidata. The distance is a straight line, not a walking route, and says nothing about buses, transfers or timetables — plan the trip on Google Maps.
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