When undertaking an appropriate assessment of impacts at a site, all features of European importance (both primary and non-primary) need to be considered.
Annex I habitats that are a primary reason for selection of this site
|Sanday is a large, low-lying island in the north-east of the Orkney archipelago. Surrounded by clear, relatively shallow water, the island has a complex coastline dominated by extensive sandy beaches and sheltered inlets, interspersed with rocky headlands. Sanday is notable for the extensive subtidal bedrock reefs that surround the island and provide a habitat for dense forests of kelp Laminaria spp. The kelp occurs to a depth of about 20 m and provides a habitat for species-rich, red algal turf communities. Sponges, such as Clathrina coriacea, and ascidians, such as Aplidium punctum, occur on the vertical rock faces. The north coast of Sanday is tide-swept and appears to support a richer fauna than the south coast, with a dense bryozoan/hydroid turf and dense brittlestar and horse mussel Modiolus modiolus beds in mixed sediment below the kelp zone. Crabs and brittlestars are common within crevices in the rock.|
Annex I habitats present as a qualifying feature, but not a primary reason for selection of this site
|1110 Sandbanks which are slightly covered by sea water all the time|
|1140 Mudflats and sandflats not covered by seawater at low tide|
Annex II species that are a primary reason for selection of this site
|1365 Harbour seal Phoca vitulina|
|Sanday is situated in the north-east of the Orkney archipelago and supports the largest group of Harbour seal Phoca vitulina at any discrete site in Scotland. The breeding groups, found on intertidal haul-out sites that are unevenly distributed around the Sanday coast, represent over 4% of the UK population. Nearshore kelp beds that surround Sanday are important foraging areas for the seals, and the colony is linked to a very large surrounding population in the Orkney archipelago.|
Annex II species present as a qualifying feature, but not a primary reason for site selection
Many designated sites are on private land: the listing of a site in these pages does not imply any right of public access.