Humber Estuary SAC

Status: Designated

Description

Site overview

This is the second-largest coastal plain estuary in the UK, and the largest coastal plain estuary on the east coast of Britain. It is a fed by the Rivers Ouse, Trent and Hull, Ancholme and Graveney.  Within the estuary there are salt meadows, mudflats, and a range of sand.  Lots of fish swim through this area including the river lamprey and the sea lamprey. Grey seals live here too. 

MPA Type

Special Area of Conservation

Special Areas of Conservation (SACs) are strictly protected sites designated under European legislation. They contribute both to the UK MPA network and set up to protect habitat types and species considered to be most in need of conservation at a European level (excluding birds).

Designation date

1 August 2007

Surface Area

366.71 km2 (141.59 mi.2)

Perimeter

265.61 km (165.04 mi.)

  • Grey seal (Halichoerus grypus)

    Among the rarest seals in the world - the UK population makes up 40% of the total global population. Grey seals spend most of their life at sea, only coming ashore to breed.

  • Sea lamprey (Petromyzon marinus)

    A primitive jawless fish that looks a bit like an eel.

  • Atlantic salt meadows (Glauco-Puccinellietalia maritimae)

    Areas with specially adapted plants found in the upper reaches of saltmarshes that are not always reached by the tide. The habitat is used for grazing, but is also very important for birds.

  • Estuaries

    The downstream part of a river, where it nears the sea, which is influenced by the tide These complex habitats can include areas always submerged by the tide as well as those exposed at low tide. They can be exceptionally important feeding and breeding ar

  • Intertidal mudflats and sandflats (Mudflats and sandflats not covered by seawater at low tide)
  • Subtidal sandbanks

    Sandbanks which are slightly covered by sea water all the time

  • Glasswort and other annuals colonising mud and sand (Salicornia and other annuals colonising mud and sand)

    Specialised plants able to thrive in the lower reaches of saltmarshes where the vegetation is frequently flooded by the tide. It is important as it can help the development of more stable saltmarsh.

Did you know?…

Over 500,000 records on undersea habitats and species have been collected by volunteer Seasearch divers providing significant evidence for inshore ‘marine protected areas’

An area over 9 times the size of Wales is now in marine protected areas in the UK, but less than 1% is considered by MCS scientists to be well managed

Over half a million people have voiced their support for ‘marine protected area’ designation in the UK through our campaigns

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