Oarai: A Quiet Day by the Sea in Ibaraki

This guide covers how to reach Oarai from Ueno, the Kamiiso torii, the shrine, the coast, the aquarium and the local seafood.

Many people visit the Kamiiso torii, which stands on a reef where rough waves strike. The sections below run from the rail line to the water's edge, through the shrine and along the shore, and end at the aquarium and the table.

Getting to Oarai from Ueno and Mito

In town, the Magari-matsu shopping street takes as its symbol a black pine bent greatly by the sea breeze. Long-established shops, including inns, sake breweries and marine product processors, line the street. Getting to the town takes a rail ride from Tokyo and a short connection at the other end.

From Tokyo, take the JR Joban Line limited express from Ueno to Mito. At Mito, change to the Kashima Rinkai Railway Oarai-Kashima Line, which runs to Oarai Station. The Umimachi Line circular bus runs from Oarai Station to Aqua World Oarai. The shrine can be reached on foot from the same station.

From	Line and operator	Change	Time or fare
Ueno, by train	JR Joban Line limited express to Mito, then the Kashima Rinkai Railway Oarai-Kashima Line to Oarai Station	Change at Mito	about 1 hour 30 minutes
Mito Station to Oarai Station	Kashima Rinkai Railway Oarai-Kashima Line	No change	about 15 minutes
Kashima-Jingu Station to Oarai Station	Kashima Rinkai Railway Oarai-Kashima Line	No change	about 1 hour
Oarai Station to Aqua World Oarai, by circular bus	Umimachi Line circular bus, sightseeing route	No change	about 20 minutes
Oarai Station to Aqua World Oarai, circular bus fare	Umimachi Line circular bus	No change	200 yen for an adult and 100 yen for a child
Oarai Station to Aqua World Oarai, route bus fare	Route bus	No change	380 yen for an adult, one way
Mito Station to Oarai Isosaki Shrine	Ibaraki Kotsu bus, route number 50	No change	about 30 minutes
Oarai Station to Oarai Isosaki Shrine, on foot	On foot	—	about 40 minutes, about 3 km
Oarai Station to Oarai Marine Tower, on foot	On foot	—	about 15 minutes

• The one-day free ticket for the Umimachi Line costs 500 yen for an adult and 250 yen for a child.
• The one-day ticket cannot be used on the Ibaraki Kotsu route 50 bus.
• Rental electric-assist bicycles at Umimachi Terrace cost 1,000 yen for 4 hours or 1,500 yen for one day, from 9:00 to 17:30.
• The highway bus from Tokyo Station leaves from the Yaesu South Exit, boarding stop 4, and stops at Mito Station.

The Kamiiso Torii at Sunrise

The morning sun lights the torii while rough Pacific waves break white against the reef. Around the winter solstice, a photograph can capture the torii and the morning sun together. On windy days, sea spray can reach visitors at the torii.

The torii stands on the coastal rocks and is a symbol of Oarai Town as well as of the shrine. Every New Year's Day, the chief priest and priests go down to the shore and worship the New Year sunrise. The rocky shore around the torii is called Kamiiso, and people may not set foot there. The torii cannot be seen without going down to the seashore.

Oarai Isosaki Shrine

The Zuijin gate carries fine carvings of rabbits, other animals and plants. The openwork carvings are carved from the wood itself rather than assembled from parts. Bizen-ware komainu stand in front of the gate.

The worship hall and thatched main hall are surrounded by the guardian forest. The stone wall around the main hall has a fine mesh pattern worked into its stonework, made by stonemasons of the early Edo period.

• Three frogs sit close together in front of the worship hall.
• The worship hall's transom has 14 carvings, of which 10 can be seen from outside.
• The main hall, worship hall and Zuijin gate were completed in Kyoho 15 (1730).

The Oarai Coast and Its Beach

Rough waves strike the large and small reefs along the coast and wash over the rock. Shore crabs on the rocky shore are timid and quickly hide. The beach here is a natural sandy beach where marine organisms live. Sand collected on the southern shore because of the effect of the Oarai Port breakwater, forming a wide beach.

Aqua World Oarai and Oarai Marine Tower

Moon jellyfish drift slowly in the jellyfish tank, with video projected on the surrounding walls, lighting in the floor, and scents that follow the season. A large tank recreates the Ibaraki offshore sea, with creatures swimming through it. Shark Daddy's Room displays shark specimens, including jawbones, egg cases and mounted specimens.

The observation room of Oarai Marine Tower offers a panorama in every direction. The entrance hall on the ground floor has a tourist information corner and a theater.

Item	Detail
Aqua World Oarai hours	9:00 to 17:00, with last entry at 16:00
Aqua World Oarai admission	2,300 yen for adults, 1,100 yen for elementary and junior high school students, 400 yen for children aged 3 and over, free for children under 3
Aqua World Oarai closure days in 2026	June 23 and 24, and December 7 to 11
Aqua World Oarai night session	every Saturday from 17:45 to 20:00, with last entry at 19:00, excluding extended daytime operation days and night event days
Aqua World Oarai parking	free, about 750 vehicles
Oarai Marine Tower hours	9:00 to 21:00, and until 18:00 from September 1 to the end of February
Oarai Marine Tower closure	December 28 to December 30

Monkfish and Seafood in Oarai

Monkfish dobujiru is made by stir-frying the monkfish liver in a pot, adding chunks of monkfish and vegetables, and simmering them in miso with the juices the ingredients release, without using water. It began as a dish that fishermen ate on their boats to keep warm.

Monkfish kyosu is a local Oarai dish of blanched monkfish flesh and liver eaten with a sauce of the liver blended with vinegared miso. Because monkfish have a slimy surface and are hard to cut on a chopping board, they are customarily cut while hanging.

Item	Detail
Oarai Kaisen Market Kaisen Donburi-tei hours	7:30 to 17:00, varying by season

If you would rather have the day arranged for you, look at Oarai tours and day trips on GetYourGuide.