Mounts Bay MCZ

Status: Designated

Description

Site overview

This 11km2 contains a range of habitats, including high energy rock and sand. The area is also an important home to several species such as seagrass, three species of stalked jellyfish and crayfish. There is a small population of ocean quahog, a type of clam which can live for up to 400 years. Dolphins, porpoises and basking sharks have also been known to swim through.  The area is adjacent to Newlyn, one of the country’s largest fishing ports and home to many fishermen, who were consulted on the positioning of this site.

MPA Type

Marine Conservation Zone

Marine Conservation Zones (MCZs) are designated under UK legislation (Marine and Coastal Access Act 2009) and have been established around England, Wales and Northern Ireland to contribute to the UK MPA network protect a range of nationally important marine wildlife, habitats, geology and geomorphology, and can be designated anywhere in English and Welsh territorial and UK offshore waters.

Surface Area

11.82 km2 (4.57 mi.2)

Perimeter

22.30 km (13.86 mi.)

  • Giant goby (Gobius cobitis)

    Reaching up to 27cm in length, this fish is Britain’s largest goby. It is found only in the south west of England.

  • Stalked jellyfish (Haliclystus spp.)

    Bell-shaped, jelly-like, eight-armed animals that have a stalk and a sucker which they use to attach to marine plants, rocks or the seabed. Some species can move and do so by cartwheeling.

  • Stalked jellyfish (Lucernariopsis campanulata)

    Bell-shaped, jelly-like, eight-armed animals that have a stalk and a sucker which they use to attach to marine plants, rocks or the seabed. Some species can move and do so by cartwheeling.

  • Stalked jellyfish (Lucernariopsis cruxmelitensis)

    Bell-shaped, jelly-like, eight-armed animals that have a stalk and a sucker which they use to attach to marine plants, rocks or the seabed. Some species can move and do so by cartwheeling.

  • Subtidal sand

    Sandy seascapes that can seem a bit like deserts, but can be full of life. Flat fish and sand eels camouflaged on the surface of the sand,worms and bivalves (with their paired, hinged shells) all live in places like these.

  • Seagrass beds

    Seagrasses (also known, for their long thin leaves, as eel grass) are grass-like flowering plants with dark green, long, narrow, ribbon-shaped leaves. They are one of the very few groups of flowering plants that live in the sea.

  • High energy intertidal rock

    Rocky seashores, exposed to very strong waves and currents.

  • Moderate energy intertidal rock

    Rocky seashores, above low tide, with some shelter from waves and currents. On these shores, there are places where plants and animals can find shelter from the waves – the landward sides of boulders, in cracks and crevices, and in rock pools.

  • Intertidal sand and muddy sand

    The beach! Sandy shores are made up of clean sand or slightly muddy sand, often scattered with seashells and stones. The surface is often ‘rippled’ by the action of waves. Below the surface worms and shellfish stay safe and damp.

  • Intertidal coarse sediment

    Where small rocks, pebbles, and gravel, sometimes mixed with coarse sand are sometimes covered by the tide. While it may not look like much lives there - there are animals specially adapted to live in the moist spaces between the shingle and gravel.

  • High energy infralittoral rock

    Shallow water rock, below the tides, exposed to very strong waves and currents.

  • Moderate energy infralittoral rock

    Shallow water rock, below the tides, with some shelter from waves and currents.

Did you know?…

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

To the shelf limits, Scotland has 61% of UK waters, of which 23% are now in existing or new ‘marine protected areas’

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