Research and analysis

Joint agency investigation into Teesside and Yorkshire Coast Crab and Lobster mortalities

Defra reports published into dead crabs and lobsters on the north-east coast of England.

• From: Department for Environment, Food & Rural Affairs, Environment Agency, Centre for Environment, Fisheries and Aquaculture Science, and Marine Management Organisation
• Published: 31 May 2022
• Last updated: 15 November 2022 — See all updates

Applies to England

Documents

Response to EFRA consideration of sealife mortality off the north-east coast

PDF, 116 KB, 3 pages

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Investigation into Teesside and Yorkshire coast crab and lobster mortalities

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Joint agency investigation into Teesside and Yorkshire Coast Crab and Lobster mortalities

PDF, 959 KB, 16 pages

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Tees Sediment Toxicity Testing – Opportune ecotoxicology Microtox testing of Tees Bay Disposal Sites

PDF, 483 KB, 17 pages

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Fish Health Inspectorate, Cefas, disease investigation into mass mortality in crabs and lobsters on the north-east coast

PDF, 200 KB, 2 pages

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Lobster parasite analysis

PDF, 680 KB, 11 pages

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Aquatic environments investigation of intertidal decapod mortalities on the north-east coast

PDF, 251 KB, 5 pages

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Testing of crab tissue samples for marine neurotoxins

PDF, 1.13 MB, 7 pages

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Testing of crustacean tissue samples associated with NE England mortality events for marine biotoxins

PDF, 1.51 MB, 11 pages

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Testing of crustacean tissue samples associated with NE England mortality events for regulated marine biotoxins – May 2022 samples

PDF, 1.37 MB, 10 pages

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Cefas components of the joint investigation into the crustacean mass mortality in Teesside and North Yorkshire in Autumn 2021

PDF, 6.99 MB, 39 pages

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Environment Agency briefing for Defra – crustacean deaths NE coast, potential radiation cause

PDF, 725 KB, 2 pages

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Intertidal decapod survey of the north-east coast – September 2022

PDF, 968 KB, 7 pages

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North-east crab mortalities - Environment Agency vessel survey report- 14 - 18 November 2021

PDF, 5.31 MB, 14 pages

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North-east crustacean incident monitoring plan

PDF, 172 KB, 6 pages

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Summary of Teesside crab incident investigation, 8 October 2021

PDF, 466 KB, 3 pages

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Summary of Teesside crab incident investigation, 25 October 2021

PDF, 169 KB, 3 pages

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Details

Between October and December 2021 dead and dying crabs and lobsters were washed ashore in unusually high numbers along parts of the north-east coast of England.

Defra group investigated a range of potential causes, including licensed dredging activity, chemical contamination, activities related to offshore windfarms, presence of algal blooms and aquatic animal disease. No single, consistent causative factor was identified. Exposure to one or multiple algal blooms which were present in the area coincident with the event was identified as of significance, and as the most likely cause of the incident. The incident investigation was closed in February 2022

A summary of our findings was published in May 2022. In November 2022, we published further reports associated with the investigation. Data relating to these reports is also available on data.gov.uk.

Published 31 May 2022
Last updated 15 November 2022 + show all updates

1. 15 November 2022

   Published further reports relating to the investigation.

2. 31 May 2022

   First published.