Calf Sound (Manx: Yn Cheyllys) is a body of water which separates the Calf of Man island from the mainland of the Isle of Man. The sound - technically a strait - is about 700 yards in width, and contains the small islet of Kitterland (home to a large colony of seals, up to 30 can be seen on Kitterland on occasion).
A visitor centre overlooking the Calf Sound holds multimedia exhibits giving information about the wildlife and history of the area. The centre, operated by Manx National Heritage also includes a café with both indoor and outdoor seating. The building erected to house the visitor centre was designed to have little visual impact when looking towards the Calf of Man, partially achieved by covering the roof with turf.