The potential ecological impact of the Marwick Head development is likely to be an important consideration within the consenting process. This is because the development could potentially have impacts upon two Special Protection Areas and, under the 1994 Habitat Regulations; Appropriate Assessments are likely to be required. Also, as they are European Protected Species, any potential impact upon cetaceans needs to be considered. As part of Aquamarine’s commitment to continuous improvement and following feedback from SNH this document reviews the existing programme of seabird and cetacean monitoring at Marwick Head in the light of the experience to date. It describes how the data collected to date will be analysed to meet the requirements of EIA and Appropriate Assessment and proposes further improvements to the existing methodologies to even better meet these requirements. Given the sensitive location of the proposed development, an extensive programme of survey and monitoring is proposed. Brough Head Wave Farm Limited (BHWFL) also commissioned one complete year of marine wildlife surveys of its Brough Head Wave Farm site. The site is located along the north-west coast of Orkney Mainland where it holds an Agreement for Lease (AfL) with the Crown Estate (Figure 1). Monthly shore-based surveys of seabirds and marine mammals using the AfL area have been conducted since April 2011 and this report (and subsequent additions) aim to characterise the marine wildlife interest of the Brough Head Wave Farm site.