Garvellachs Islands

The Garvellachs, a remote chain of uninhabited islands south of Seil, are surrounded by kelp-draped walls and boulder slopes that support one of Scotland's most accessible grey seal colonies. Swell-polished rock faces carry enormous diversity of encrusting life — sponges, hydroids, jewel anemones, and sea squirts in a riot of colour that confounds the perception of Scotland as a drab diving destination. Nudibranchs are exceptional here, with over 30 species recorded in a single season.