This marine lake is both unusual and important due to its extraordinary diversity of species in its relatively small area – over 1000 species in less than 1 sq km. Some of its plants and animals are more commonly found in the deeper ocean. Others are historically of Mediterranean origin. The site contains several rare species including two fish; the Red-mouthed Goby and Couch’s Goby and two sea slug. One of these sea slugs, the 2cm long Facelina dubia, is only found in Lough Hyne, the Mediterranean and one site in the Bay of Biscay.
Lough Hyne’s biodiversity is partly due to its variety of habitats – including cliffs, boulders, gravel and mud slopes which experience varying exposure to waves and tidal currents. The average depth of water is around 25 metres increasing to 45 metres in places. It is fed from the sea by a narrow tidal channel known as 'The Rapids'.
- Find out about the Lough Hyne Interpretative Centre
- Research at Lough Hyne