Insh is an uninhabited island west of the island of Seil

Seil

One of the Slate Islands, Seil is a small island on the east side of the Firth of Lorn, southwest of Oban, in Scotland.Seil has been linked to the Scottish mainland since 1792 when the Clachan Bridge was built by engineer Robert Mylne...

 in the Firth of Lorn, Scotland

Scotland

Scotland is a country that is part of the United Kingdom. Occupying the northern third of the island of Great Britain, it shares a border with England to the south and is bounded by the North Sea to the east, the Atlantic Ocean to the north and west, and the North Channel and Irish Sea to the...

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One of the Slate Islands

Slate Islands

The Slate Islands are an island group in the Inner Hebrides, lying immediately off the west coast of Scotland, north of Jura and southwest of Oban. The main islands are Seil, Easdale, Luing, Lunga, Shuna, Torsa and Belnahua...

, Insh Island lies a mile (1.5 km) northeast of Ellenabeich in Seil

Seil

One of the Slate Islands, Seil is a small island on the east side of the Firth of Lorn, southwest of Oban, in Scotland.Seil has been linked to the Scottish mainland since 1792 when the Clachan Bridge was built by engineer Robert Mylne...

. It is separated from it by the Sound of Insh. The island rises to 69m (226 feet) and is 36 ha in area. The private owner is believed to occasionally live in a cave at the north end.

The Northern sea fan (Swiftia pallida) is found in the waters off Insh Island.