Natural England Conservation Advice for Marine Protected Areas
The Manacles MCZ

Natural England guidance

This site collection contains Natural England’s conservation advice for this site. It fulfils Natural England’s responsibility under the Marine and Coastal Access Act 2009, to give advice on how to further the conservation objectives for the site, identify the activities that are capable of affecting the designated features and the processes which they are dependent upon.

Natural England's conservation advice for this site is made up of a number of components. You will need to consider: Additional information for consideration:

Site information

Site name: The Manacles MCZ
Designation type: MCZ
Site identification: UKMCZ0018
Latest designation date: 29 January 2016
Designated features
(click to see site specific description):

General information on the site features:
The general information on the designated features from the MCZ features catalogue is useful for understanding the designated features, and should be used in conjunction with the site specific information.
Designated area (ha): 350
Moderation/boundary changes: The site was designated on 12 December 2013. Pink sea-fan (Eunicella verrucosa), Subtidal coarse sediment and Subtidal mixed sediments were added as a protected features on 29 January 2016.
Component Sites of Special Scientific Interest (SSSI):
Overlapping Protected Areas:

Last updated: 13th September 2019

Background information and geography

The Manacles MCZ is an inshore site located on the east coast of the Lizard Peninsula, in south-west Cornwall. The Manacles is a relatively small MCZ, extending just 2 km from the coastline and running from Polcries northwards to Porthoustock Point along the landward boundary.

The intertidal area in The Manacles MCZ is dominated by moderate energy intertidal rock and intertidal coarse sediment, encompassing rocky points and sandy coves.

As well as the many shipwrecks found under the waves at the site, there lies a series of large underwater rocky outcrops of moderate energy infralittoral rock and moderate energy circalittoral rock, extending to depths of 14 to 57 meters. This underwater landscape provides for a huge variety of rich rocky reef communities. The diverse seafloor landscape also includes maerl beds and sedimentary habitats such as subtidal sand, subtidal coarse sediment and subtidal mixed sediment.

The high quality reefs at The Manacles are a principal reason underpinning the site’s recommendation as a MCZ. Dense populations of the pink sea-fan (Eunicella verrucosa) occur throughout the deeper waters of the MCZ, some of which support the sea-fan anemone (Amphianthus dohrnii). The Manacles MCZ creates and supports a habitat ideal for mobile species such as the spiny lobster (Palinurus elephas), found amongst the bedrock and boulders of the rocky reef system. The stalked jellyfish (Haliclystus auricula) has also been recorded in the site.

Site maps

Use the MAGIC website to see site maps, including habitats, species and other marine designations.

These maps are based on best available evidence, there are some caveats associated with the maps on MAGIC.

Conservation objectives

The site’s conservation objectives apply to the Marine Conservation Zone and the individual species and/or habitat for which the site has been designated (the “Designated Features” listed below).

The conservation objective of the zone is that the protected habitats:

1. are maintained in favourable condition if they are already in favourable condition

2. be brought back to favourable condition if they are not already in favourable condition

For each protected feature, favourable condition means that, within a zone:

1. its extent is stable or increasing

2. its structure and functions, its quality, and the composition of its characteristic biological communities (including diversity and abundance of species forming part of or inhabiting the habitat) are sufficient to ensure that its condition remains healthy and does not deteriorate

Any temporary deterioration in condition is to be disregarded if the habitat is sufficiently healthy and resilient to enable its recovery.

For each species of marine fauna, favourable condition means that the population within a zone is supported in numbers which enable it to thrive, by maintaining:

1. the quality and quantity of its habitat

2. the number, age and sex ratio of its population

Any temporary reduction in numbers of a species is to be disregarded if the population is sufficiently thriving and resilient to enable its recovery.

Any alteration to a feature brought about entirely by natural processes is to be disregarded when determining whether a protected feature is in favourable condition.

This should be read in conjunction with the accompanying supplementary advice section, which provides more detailed information to help achieve the objectives set out above, including which attributes should be maintained and which recovered.

Designated features:

  • Intertidal coarse sediment
  • Maerl beds
  • Moderate energy circalittoral rock
  • Moderate energy infralittoral rock
  • Moderate energy intertidal rock
  • Pink sea-fan (Eunicella verrucosa)
  • Sea-fan anemone (Amphianthus dohrnii)
  • Spiny lobster (Palinurus elephas)
  • Stalked jellyfish (Haliclystus auricula)
  • Subtidal coarse sediment
  • Subtidal macrophyte-dominated sediment
  • Subtidal mixed sediments
  • Subtidal sand

Supplementary Advice on Conservation Objectives

See supplementary advice on conservation objectives for this site, which aim to describe the range of ecological attributes that are most likely to contribute to a site’s overall integrity.

Last updated: 15th September 2017

Advice on Operations

See the advice on operations for this site to view information on the sensitivity of features in this site to the pressures exerted by different activities.

Last updated: 13th September 2019

Advice on Seasonality

See the advice on seasonality for this site, to view the months in which each mobile feature occurs in this site.

Last updated: 20th March 2017

Feature Condition

In 2016, Natural England trialled and rolled out a new Marine Protected Area (MPA) condition assessment methodology that provides robust results and information on the condition of marine features designated within MPAs in England. With guidance from National teams and using all available evidence and condition monitoring data, Area Teams conduct these assessments following a standardised approach that assesses if the feature and sub feature conservation targets set for each MPA have been met.

To date, condition assessments have been completed for a number of features in a range of marine Special Areas of Conservation (SACs) by the National and Area Teams. Further marine habitat features in SACs and other MPAs will continue to be assessed in the future. The new method can now also be applied to complete habitat and species condition assessments for other MPAs in England, whilst still meeting the different processes in place to report on the results of condition of features in Marine Conservation Zones (MCZs) and Special Protection Areas (SPAs). Different processes are currently in place to decide and report on the condition of non-marine habitat and species features of SACs.

The main part of the assessment process is directly undertaken and stored here on Natural England’s Designated Sites View. The details for the most recent assessments of this site can be found here.

Management measures

If you are carrying out an environmental assessment, planning an operation or assessing an operation or proposal, it is important to consult with the following organisations where applicable. To find out if any management measures, byelaws or other restrictions apply to your activity see the management measure page or you can use the following links for more information.

The Marine Management Organisation license, regulate and plan marine activities in the seas around England and Wales so that they’re carried out in a sustainable way.
Environment Agency are responsible for regulating major industry and waste, water quality and resources, fisheries, inland river, estuary and harbour navigations, conservation and ecology.
Offshore Petroleum Regulator for the Environment and Decommissioning (OPRED) regulates oil and gas, CCS and gas storage activities in the marine environment.

Further information

For further information relating to this designated site you can refer to the following resources:
Site specific information: Other information:
For further information about this site contact: Natural England enquiries Telephone: 0300 060 3900. Email: