The standard shall provide guidance for marine biological surveys of supra-littoral, littoral and sub-littoral hard bottom for environmental impact assessment and monitoring in coastal areas. The standard encompasses surveys down to 30 m depth, which is the practical depth limit for scuba diving. For the purposes of this standard, hard bottom is defined as bedrock, stable rocks and fixed marine constructions (e.g. pipelines, quays and wharf, keys and pipelines pole). The main focus is community registrations based on taxa that can be recorded in the field (i.e. are visible to the naked eye). The standard does not include biogenic substrate as coral rief.The