The Dogger Bank is a shallow area that extends across the UK, Dutch, German and Danish sectors of the North Sea.
The Dutch Habitat Directive site or SAC is a marine site of approx. 4,715 km² that lies at the northern tip of the Exclusive Economic Zone. It is some 275 km to the north-west of Den Helder. The name comes from the fifth-century Dutch word for cod: dogge or doggevisch. A dogger was a cod fisherman or his fishing boat.
The Dogger Bank is a Habitat Directive site or SAC that consists of ‘sandbanks which are slightly covered by sea water all the time, subtype Dogger Bank’ (see: habitat type H1110C).
The Habitat Directive species are harbour porpoise, grey seal and harbour seal.
The water depth in the Dutch sector of the Dogger Bank varies between 24 m and 40 m. At this sandbank, no fresh river water mixes with the salt water. This distinguishes this sandbank from other water-covered sandbanks closer to the coast. As there is little suspended material in the water column, light can penetrate right down to the seabed. This enables photosynthesis at the sea bottom and makes it possible for numerous organisms to thrive.
For seabirds and marine mammals, the sandeel and smelt are important food sources here. This site is home to numerous fish species that are nowadays rare and are long-lived and have slow reproduction. One of these is the thornback ray.