Map showing potential and high confidence mapped extents of Annex I habitat ‘submarine structures making by leaking gases’ within the boundaries of the UK continental shelf. ‘Submarine structures making by leaking gases’ here refers to the habitat (1180) listed under Annex I of EC Directive 92/43/EEC of 21 May 1992 on the conservation of natural habitats and of wild fauna and flora – commonly known as the Habitats Directive. Areas where the habitat has been mapped in either zero or one dimension are represented in separate layers as points and lines.