01 ／ Habu Port, Akihiro Heiroku
The Tokyo board of education says Akihiro Heiroku came in 1790, noticed Habu pond, then only slightly open to the sea, and petitioned the shogunate to take on cutting its harbor mouth. The work took 980 ryo, 12,000 person-days and five months, and he went on to found Habu Port Village.
02 ／ Fudeshima, Otaineura
The Tokyo board of education says a rock about 30 m high rises at Otaineura and is called Fudeshima, "brush island", because it resembles the tip of a brush. Also called Otaine, it became an object of worship as a place where a god dwells. The coast was designated a Tokyo Natural Monument in 1940.
03 ／ Sashikiji Bronze Mirrors, Great Tree
Tokyo's cultural property notes say three bronze mirrors were found in the mid-Taisho era at the foot of a large tree in Sashikiji, and are thought to be remains of rites tied to sea and sacred-tree worship. They were later moved to the local museum. In the grounds of Sashikiji's Kannon hall stands the Great Tree, a Tokyo-designated Natural Monument.
Now and 1974–78. Tap a photo to zoom in.
Wide (about 6 km across)
Close (about 1.5 km across)
Now (shot November 2016)Shot 1974–78
Source: Geospatial Information Authority of Japan (GSI) GSI Tiles（全国最新写真（シームレス）／国土画像情報（第一期：1974〜1978年撮影））
Living here
Oshima has no railway, and boats arrive at the Port of Okata or the Port of Motomachi. Tokai Kisen's high-speed jet ship takes 105 minutes from Takeshiba Pier (October 2026 timetable), and the town website gives 1 hour 45 minutes by high-speed boat.
−9.9% since 2015
9,693 → 7,102
43.36km² of it habitable
2024
1.9 people per household
2020
4.2 per 10,000 people
2023
These 3 items are waiting on a nationwide data source. We do not fill them with estimates.
ACCESS
Travel times follow 東海汽船公式の時刻表（https://www.tokaikisen.co.jp/boarding/timetable/ からリンクされる時刻表PDF〔2026年8月版・簡体字／繁體字／英語／韓国語〕。日本語の時刻表は同ページに埋め込みで、PDFは外国語版のみ取得できた）の『高速ジェット船 運航期間：10/1〜1/31』〈東京〜大島・利島・新島・式根島・神津島航路〉を2026-10-22に読んだ。東京（竹芝）発の便は、1210便（8:35発→大島10:20着・運航日A・C）、1220便（8:35発→大島10:20着・運航日B・利島経由の便）、1230便（13:25発→大島15:10着・運航日『毎日』）のいずれも105分。毎日運航の1230便の13:25→15:10で数えた。 (checked 2026-10-22). They vary by time of day.
Shape
North to south
13.5km
If something caught your eye, ask the town itself.
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