From many parts of the west of Mull coastline, the unique and evocative landscape of the Treshnish Isles can be clearly seen. The Treshnish Isles is an archipelago of small islands and skerries, volcanic in origin, which are very exposed with no landing sites and human habitation, therefore a haven for wildlife. The Treshnish Isles possess a unique landscape, with rich wildlife communities and contain habitat which is vital to several vulnerable species.
Staffa Tours run boat trips to Lunga, the largest of the Treshnish Isles, where it is possible to go ashore and witness one of the most varied and accessible seabird colonies including guillemot, razorbill, puffin, kittiwake, fulmar, shag and skua during the nesting season. Puffins spend most of the year at sea and breed from April to July and leave again in early August. Lunga is also an important breeding ground for grey seals.
Outwith the nesting season, Lunga is well worth a visit. It was populated until the mid 19th century and at the north east end of the island is the remains of a ruined abandoned village. Lunga is designated a Site of Special Scientific Interest because of its abundant plant life, much of which is rare and endangered.