Islands
The north western approaches to the sound are guarded by a series of small islands north of the Point of Fethland, which is the northernmost land of Northmavine on the Shetland Mainland. The largest of these islands is Gruney and a small archipelago of reefs and skerries lies north of there known as the Ramna Stacks including (from north to south) Gaut Skerries, Outer Stack, Scordar, Turla, Hyter, Ofoora, Fladda, Flae-ass, and Barlcudda.
Yell itself lies east of the sound. South of the headland of Nev of Stuis on Yell there are various islands in the sound including Sweinna Stack, Holm of West Sandwick, Muckle Holm, and Little Holm. Yell Sound narrows between Mio Ness on the Mainland and south Yell. The islands of Bigga, Brother Isle, Lamba, Orfasay, Little Roe, Samphrey and Uynarey lie in this part of the channel.
South of Firth Ness the sound widens and Fish Holm, Linga, Setter Holm, Sinna Skerry, and Wether Holm are found here. The eastern approaches lie between Heoga Ness on Yell and Lunna Ness on the Mainland. Gold Skerry, Green Holm and Neapback Skerries lie off the former and Lunna Holm and Sand Skerry north of the latter.
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