Bluemull Sound is the strait between Unst

Unst

Unst is one of the North Isles of the Shetland Islands, Scotland. It is the northernmost of the inhabited British Isles and is the third largest island in Shetland after the Mainland and Yell. It has an area of .Unst is largely grassland, with coastal cliffs...

 and Yell

Yell

Yell is one of the North Isles of Shetland, Scotland. In the 2001 census it had a usually resident population of 957. It is the second largest island in Shetland after the Mainland with an area of , and is the third most populous in the archipelago , after the Mainland and Whalsay.The island's...

 in Shetland's North Isles. A ferry service crosses it regularly. Cullivoe

Cullivoe

Cullivoe , is a village on Yell in the Shetland Islands. It is in the north east of the island, near Bluemull Sound, not far from Unst....

 is on the Yell side, and the island of Linga

Linga, Yell

Linga is a very small uninhabited island in the Bluemull Sound, Shetland, Scotland. It is one of many islands in Shetland called Linga. It has an area of 45 ha and is 26m at its highest point.-Geography and geology:...

lies in the strait.

The "world's first community-owned tidal power generator" is planned for Bluemull Sound. This 30 kW Nova Innovation device is expected to be operational by the end of 2011.