Minerals
The Issue: Deep-seabed mining has been proposed as an alternative source of minerals, with large deposits present both within and beyond national jurisdictions. In areas beyond national jurisdiction, the International Seabed Authority is mandated by the United Nations to organise, regulate and control mineral-related activities for the benefit of humankind as a whole, as well as to ensure effective protection of the marine environment from harmful effects that may arise from such activities. Current challenges to robust protection of the remote deep sea include, for example, the scarcity of environmental baseline data and the lack of thresholds for harmful effects. Proactive development and implementation of comprehensive management practices, frameworks, and policies prior to the onset of mining are needed to ensure the protection of deep-sea biodiversity and ecosystem function.
The Working Group: The DOSI Minerals working group (180 experts) constitutes a broad spectrum of scientific, industry, economic, conservation, legal and policy expertise. As collated working group responses and as individuals, we provide expert opinion on deep-seabed mining related concerns through written responses, policy briefs, publications, side-events, interventions, workshops and symposia.
The Minerals Working Group is participating in the 29th ISA Council meeting. The second part of that meeting is taking place this July. Among our other activities, the Minerals Working Group is sharing an Information Sheet explaining the challenges associated with different options for mitigating the impact of deep-sea mining. The new Information Sheet was produced in partnership with DEEP REST. We are also sharing a new DOSI Policy Brief on the topic of introducing a “sufficient information requirement” for deep-sea mining.
Read our participation report from the First Council meeting of the 29th session of the ISA in Kingston, Jamaica (March 2024)
Responses to ISA
- June 2024 EIS comments
- DOSI comment on: “Environmental Impact Statement – Joint Test of Deep-sea Miner and Buffer Station in Beijing Pioneer Polymetallic Nodule Contract Area, Western Pacific”
- DOSI comment on: “Environmental Impact Statement – Testing of Polymetallic Nodule Collector Vehicle in the Block A-5 of the Minmetals Contract Area”
- Our July 2023 Information Sheets explaining services provided to humans by:
- Our March 2023 Information Sheet, Latest Science on the Impact of Deep-Sea Mining on Benthic and Pelagic Ecosystems and Fisheries
- Our October 2022 Information Sheet, Scientific Knowledge is Currently Insufficient for Effective Environmental Management of Deep-Seabed Mining
- Our letter regarding the LTC’s recommendation in NORI’s revised Environmental Impact Statement
- Our Information Sheet on missing elements of the revised Environmental Impact Statement for the prototype collector test of Nauru Ocean Resources, Inc. (NORI).
- Policy Brief: What Does the Deep Ocean Do for You?
- Our response to ISA’s stakeholder consultation on the Draft Regional Environmental Management Plan for the Northern Mid-Atlantic Ridge
- Information Sheet: The Ongoing Science Needed for Robust Deep-Sea Mining Regulations
- Comment on the Environmental Impact Statement for NORI’s plans to test a collector system in the CCZ
- Statement on the triggering of the ISA’s two-year rule by Nauru
- June 2021 – Commentary on Draft guidelines:
Other Publications
2023
- We delivered a special session on the biodiversity risks of deep seabed mining during the 5th World Conference on Marine Biodiversity in Malaysia, July 2023. The session received good feedback and similar events will be considered for the future. Read our full Participation Report from the event, here.
- In July 2023, we participated in the second part of the 28th ISA Council meeting, and hosted an in-person side-event with Pew Charitable Trusts and the Natural History Museum (London). Read our Participation Report from the meeting here.
- During the first part of the 28th ISA Council meeting, our members hosted a series of presentations on the “Latest Science on the Impacts of Deep-Sea Mining on Benthic and Pelagic Ecosystems and Fisheries.” An Information Sheet with the presentation highlights is available here. You can also read our full Participation Report from part 1 of the 28th ISA Council meeting here.
- In March 2023, we made a Submission to the ISA’s Intersessional Dialogue to facilitate further discussion in connection with section 1, paragraph 15, of the annex to the Agreement relating to Part XI, UNCLOS. The submission focused on the need to establish a science-based approach before seabed mining plans are agreed.
- We provided stakeholder feedback on the Social Impact Assessment Scoping Report for the NORI-D Polymetallic Nodule Collection Project. You can read our feedback here.
- In January 2023, DOSI’s Minerals Working Group responded to a hearing arranged by the Government of Norway seeking comments on its Impact Assessment for minerals activities on the Norwegian continental shelf. You can read the response here.
2022
- The third part of the 27th ISA Council meeting in November 2022 was our last major meeting for the year. You can read the report outlining our contributions here.
- In preparation for ISA Council meetings in November 2022, we created a new Information Sheet to share with delegates: Scientific Knowledge is Currently Insufficient for Effective Environmental Management of Deep-Seabed Mining.
- In October 2022, we submitted a letter to the ISA seeking clarification on reasons for approving the revised Environmental Impact Statement of Nauru Ocean Resources, Inc. (NORI).
- We brought crucial deep-ocean science to the second part of the 27th Council meeting of the International Seabed Authority in August 2022. You can read the report outlining our contributions here.
- In July 2022, we shared an Information Sheet identifying missing elements of the revised Environmental Impact Statement for the prototype polymetallic nodule collector test of Nauru Ocean Resources, Inc. (NORI).
- In June 2022, we released a Policy Brief on ecosystem services titled: What Does the Deep Ocean Do for You?
- In May 2022, we responded to an ISA stakeholder consultation on the Draft Regional Environmental Management Plan for the Northern Mid-Atlantic Ridge. Our submission highlighted the need for further collaboration with stakeholders to fill current gaps in the draft rules.
- We contributed to part 1 of the 27th Council meeting of the International Seabed Authority by bringing deep-ocean science and its implications to the discussion. You can read the report outlining our contributions here.
- DOSI Minerals WG recently created an information sheet on The Ongoing Science Needed for Robust Deep-Sea Mining Regulations.
2021
- In December 2021, the WG submitted an official comment on the Environmental Impact Statement for NORI’s plans to test a polymetallic nodule collector system in the NORI-D lease area of the eastern Clarion Clipperton Zone. In the comment, we express our concern that the baseline data needed for an adequate EIS are not yet analysed, making the EIS in its current form incomplete. Read the Comment
- DOSI Minerals WG has submitted a letter of concern in response to a proposal by the ISA to hold an in-person Annual Session this December in the midst of the COVID-19 pandemic, travel restrictions, and inequitable vaccine distribution. To ensure inclusion and transparency, we have suggested postponement or hybrid participation. Read the Letter
- DOSI is committed to actively participating in the proceedings of the ISA and other forums, as well as to ensuring our strong representation in relevant workshops on the environmental planning and management of the Area.
- DOSI Minerals WG is currently preparing comments on the latest version of the ISA draft standards & guidelines
- DOSI will continue to work directly with country delegates and other stakeholders to assist with deep-seabed-mining matters within national jurisdictions.
- DOSI Deep-Sea Mining Library: with the generous help of Daniëlle de Jonge and Alycia Smith, deep-sea stakeholders now have a comprehensive library on a variety of aspects of deep-seabed mining. Please contact us with new additions. Short manual for using the DOSI Zotero here.
- DOSI statement on the triggering of the ISA’s two-year rule by Nauru
- June 2021: DOSI Policy Brief – The Necessity of Traditional Knowledge for Management of Deep-Seabed Mining
- June 2021: DOSI Minerals WG submitted comments on 5 of the 7 draft ISA Standards and Guidelines, including the:
- Environmental Impact Assessment Process
- Establishment of Baseline Environmental Data
- Preparation of an Environmental Impact Statement
- Tools and techniques for hazard identification and risk assessment
- Preparation of environmental management and monitoring plans
- March 2021: Webinar in conjunction with IUCN: Raising the Curtain on Deep-Sea Mining. Watch the recording here.
- January 2021: DOSI submitted commentary on the draft Communications and Stakeholder Engagement Strategy issued in December 2020.
- January 2021: DOSI, the University of Edinburgh and WhaleWise co-hosted the “Treasures of the deep” webinar on deep-seabed mining. This is available on demand HERE.
- DOSI participated in a number of virtual deep-seabed mining workshops and meetings, including:
2020
- ISA Workshop on the on deep sea taxonomic standardization: Strategic approaches for collaboration. 15-16 September 2020
- ISA Workshop on the DeepData workshop focusing on data management strategy. 21-25 September 2020
- ISA Workshop on the Workshop on regional environmental management plan (REMP) for the Area of the North West Pacific. 26-30 October, 2-6 November 2020
- ISA Workshop on regional environmental management plan (REMP) for the Area of the Northern Mid-Atlantic Ridge with a focus on PMS deposits. 23-27 November, 30 November-4 December 2020
- ISA Workshop on marine scientific research in the Area: Establishing a collaborative platform for improving biodiversity knowledge to support environmental management in mid-ocean ridge ecosystems focusing on the Indian Ocean. 15-17 December 2020
- 21-23 October 2020: DOSI Deep-Sea Workshop for Pacific Islands States. ‘The Deep Sea, Humans, and Management’ was due to be held in Suva, Fiji, but was instead held remotely in a more concise form. Between 30 and 60 people joined per day. All lectures are publicly available HERE, and videos most relevant to mining can also be found below:
- May 2020: DOSI submitted commentary on the Environmental Impact Statement for a Polymetallic-nodule Collector Pre-prototype for Deep-sea Mining issued in March 2020 by the Government of India’s Ministry of Earth Sciences
- Feb 2020: DOSI attended the first part of the ISA 26th Session, presenting a new policy brief “Ecological Connectivity: Implications for Ocean Governance”, delivering four interventions, and co-hosting a scientific side-event on the importance of biodiversity and connectivity to the management of deep-seabed mining, with examples from the Clarion Clipperton Zone and the Mid Atlantic Ridge. The DOSI delegation consisted of Diva Amon, Anna Metaxas, Saskia Brix, Maila Guilhon and Sergio Cambronero.
- 2019
- DOSI had representation at the Workshop on the Regional Environmental Management Plan for the Area of the Northern Mid-Atlantic Ridge – Evora, Portugal – 25-29 November 2019.
- DOSI attended a Workshop on Strategic Approaches to Developing Regional Environmental Management Plans – Hamburg, Germany – 11-13 November 2019
- Scientific Considerations for Environmental Management of Inactive Polymetallic Sulfide (PMS) Ecosystems – Galway, Ireland – 22-24 October 2019.
- Deep CCZ Biodiversity Synthesis Workshop – Washington, USA – 1-4 October 2019
- The ISA invited comments on the latest iteration of the Draft Exploitation Regulations, which can be found here: https://www.isa.org.jm/document/isba25c18. DOSI members compiled a commentary – October 2019.
- July 2019: DOSI attended the Pew-RESOLVE Workshop “ISA Inspections and ISA Inspectorate: What will be Needed?” Irish Town, Jamaica
- July 2019: DOSI attended the second part of the ISA 25th Session, presenting two new policy briefs, delivering eight interventions, and co-hosting a scientific side event. The DOSI delegation consisted of Diva Amon, Lisa Levin, Anna Metaxas, Pradeep Singh, Eulogio Soto, Maila Guilhon and Sergio Cambronero.
- June 2019: DOSI hosted ‘Deep-Ocean Climate Connections’, an expert workshop on climate change and deep-seabed mining at Scripps Institution of Oceanography, USA.
- May 2019: DOSI Minerals WG members submitted a Commentary on the “Draft High Level Action Plan and Priorities and the Report of the Secretary-General on the Implementation of the Strategic Plan for the International Seabed Authority: Draft Performance Indicators for the 2019-2023 period” issued earlier this year.
- May 2019: The ISA workshop, “The Development of Standards and Guidelines for Activities in the Area”, hosted in Pretoria, South Africa was attended by Diva Amon and Amber Cobley on behalf of DOSI.
- February 2019: DOSI attended the first part of the ISA 25th Session, presenting three policy briefs, delivering four interventions and hosting a side event. The DOSI delegation consisted of Jeff Drazen, Aline Jaeckel, Julie Huber, Verena Tunnicliffe, Philip Turner, Jessie Perelman and Diva Amon.
2023
- The group participation in the 28th Session ISA Part III, November 2023. Read the full Participation Report here.
- We delivered a special session on the biodiversity risks of deep seabed mining during the 5th World Conference on Marine Biodiversity in Malaysia, July 2023. The session received good feedback and similar events will be considered for the future. Read our full Participation Report from the event, here.
- In July 2023, we participated in the second part of the 28th ISA Council meeting, and hosted an in-person side-event with Pew Charitable Trusts and the Natural History Museum (London). Read our Participation Report from the meeting here.
- During the first part of the 28th ISA Council meeting, our members hosted a series of presentations on the “Latest Science on the Impacts of Deep-Sea Mining on Benthic and Pelagic Ecosystems and Fisheries.” An Information Sheet with the presentation highlights is available here. You can also read our full Participation Report from part 1 of the 28th ISA Council meeting here.
- In March 2023, we made a Submission to the ISA’s Intersessional Dialogue to facilitate further discussion in connection with section 1, paragraph 15, of the annex to the Agreement relating to Part XI, UNCLOS. The submission focused on the need to establish a science-based approach before seabed mining plans are agreed.
- We provided stakeholder feedback on the Social Impact Assessment Scoping Report for the NORI-D Polymetallic Nodule Collection Project. You can read our feedback here.
- In January 2023, DOSI’s Minerals Working Group responded to a hearing arranged by the Government of Norway seeking comments on its Impact Assessment for minerals activities on the Norwegian continental shelf. You can read the response here.
2022
- The third part of the 27th ISA Council meeting in November 2022 was our last major meeting for the year. You can read the report outlining our contributions here.
- In preparation for ISA Council meetings in November 2022, we created a new Information Sheet to share with delegates: Scientific Knowledge is Currently Insufficient for Effective Environmental Management of Deep-Seabed Mining.
- In October 2022, we submitted a letter to the ISA seeking clarification on reasons for approving the revised Environmental Impact Statement of Nauru Ocean Resources, Inc. (NORI).
- We brought crucial deep-ocean science to the second part of the 27th Council meeting of the International Seabed Authority in August 2022. You can read the report outlining our contributions here.
- In July 2022, we shared an Information Sheet identifying missing elements of the revised Environmental Impact Statement for the prototype polymetallic nodule collector test of Nauru Ocean Resources, Inc. (NORI).
- In June 2022, we released a Policy Brief on ecosystem services titled: What Does the Deep Ocean Do for You?
- In May 2022, we responded to an ISA stakeholder consultation on the Draft Regional Environmental Management Plan for the Northern Mid-Atlantic Ridge. Our submission highlighted the need for further collaboration with stakeholders to fill current gaps in the draft rules.
- We contributed to part 1 of the 27th Council meeting of the International Seabed Authority by bringing deep-ocean science and its implications to the discussion. You can read the report outlining our contributions here.
- DOSI Minerals WG recently created an information sheet on The Ongoing Science Needed for Robust Deep-Sea Mining Regulations.
2021
- In December 2021, the WG submitted an official comment on the Environmental Impact Statement for NORI’s plans to test a polymetallic nodule collector system in the NORI-D lease area of the eastern Clarion Clipperton Zone. In the comment, we express our concern that the baseline data needed for an adequate EIS are not yet analysed, making the EIS in its current form incomplete. Read the Comment
- DOSI Minerals WG has submitted a letter of concern in response to a proposal by the ISA to hold an in-person Annual Session this December in the midst of the COVID-19 pandemic, travel restrictions, and inequitable vaccine distribution. To ensure inclusion and transparency, we have suggested postponement or hybrid participation. Read the Letter
- DOSI is committed to actively participating in the proceedings of the ISA and other fora, as well as to ensuring our strong representation in relevant workshops on the environmental planning and management of the Area.
- DOSI Minerals WG is currently preparing comments on the latest version of the ISA draft standards & guidelines
- DOSI will continue to work directly with country delegates and other stakeholders to assist with deep-seabed-mining matters within national jurisdictions.
- DOSI Deep-Sea Mining Library: with the generous help of Daniëlle de Jonge and Alycia Smith, deep-sea stakeholders now have a comprehensive library on a variety of aspects of deep-seabed mining. Please contact us with new additions. Short manual for using the DOSI Zotero here.
- Past Activities (in reverse chronological order):29 June 2021:
- DOSI statement on the triggering of the ISA’s two-year rule by Nauru
- June 2021: DOSI Policy Brief – The Necessity of Traditional Knowledge for Management of Deep-Seabed Mining
- June 2021: DOSI Minerals WG submitted comments on 5 of the 7 draft ISA Standards and Guidelines, including the:
- Environmental Impact Assessment Process
- Establishment of Baseline Environmental Data
- Preparation of an Environmental Impact Statement
- Tools and techniques for hazard identification and risk assessment
- Preparation of environmental management and monitoring plans
- March 2021: Webinar in conjunction with IUCN: Raising the Curtain on Deep-Sea Mining. Watch the recording here.
- January 2021: DOSI submitted commentary on the draft Communications and Stakeholder Engagement Strategy issued in December 2020.
- January 2021: DOSI, the University of Edinburgh and WhaleWise co-hosted the “Treasures of the deep” webinar on deep-seabed mining. This is available on demand HERE.
2020
- DOSI participated in a number of virtual deep-seabed mining workshops and meetings, including:
- ISA Workshop on the on deep sea taxonomic standardization: Strategic approaches for collaboration. 15-16 September 2020
- ISA Workshop on the DeepData workshop focusing on data management strategy. 21-25 September 2020
- ISA Workshop on the Workshop on regional environmental management plan (REMP) for the Area of the North West Pacific. 26-30 October, 2-6 November 2020
- ISA Workshop on regional environmental management plan (REMP) for the Area of the Northern Mid-Atlantic Ridge with a focus on PMS deposits. 23-27 November, 30 November-4 December 2020
- ISA Workshop on marine scientific research in the Area: Establishing a collaborative platform for improving biodiversity knowledge to support environmental management in mid-ocean ridge ecosystems focusing on the Indian Ocean. 15-17 December 2020
- 21-23 October 2020: DOSI Deep-Sea Workshop for Pacific Islands States. ‘The Deep Sea, Humans, and Management’ was due to be held in Suva, Fiji, but was instead held remotely in a more concise form. Between 30 and 60 people joined per day. All lectures are publicly available HERE, and videos most relevant to mining can also be found below:
- May 2020: DOSI submitted commentary on the Environmental Impact Statement for a Polymetallic-nodule Collector Pre-prototype for Deep-sea Mining issued in March 2020 by the Government of India’s Ministry of Earth Sciences
- Feb 2020: DOSI attended the first part of the ISA 26th Session, presenting a new policy brief “Ecological Connectivity: Implications for Ocean Governance”, delivering four interventions, and co-hosting a scientific side-event on the importance of biodiversity and connectivity to the management of deep-seabed mining, with examples from the Clarion Clipperton Zone and the Mid Atlantic Ridge. The DOSI delegation consisted of Diva Amon, Anna Metaxas, Saskia Brix, Maila Guilhon and Sergio Cambronero.
2019
- DOSI had representation at the Workshop on the Regional Environmental Management Plan for the Area of the Northern Mid-Atlantic Ridge – Evora, Portugal – 25-29 November 2019.
- DOSI attended a Workshop on Strategic Approaches to Developing Regional Environmental Management Plans – Hamburg, Germany – 11-13 November 2019
- Scientific Considerations for Environmental Management of Inactive Polymetallic Sulfide (PMS) Ecosystems – Galway, Ireland – 22-24 October 2019.
- Deep CCZ Biodiversity Synthesis Workshop – Washington, USA – 1-4 October 2019
- The ISA invited comments on the latest iteration of the Draft Exploitation Regulations, which can be found here: https://www.isa.org.jm/document/isba25c18. DOSI members compiled a commentary – October 2019.
- July 2019: DOSI attended the Pew-RESOLVE Workshop “ISA Inspections and ISA Inspectorate: What will be Needed?” Irish Town, Jamaica
- July 2019: DOSI attended the second part of the ISA 25th Session, presenting two new policy briefs, delivering eight interventions, and co-hosting a scientific side event. The DOSI delegation consisted of Diva Amon, Lisa Levin, Anna Metaxas, Pradeep Singh, Eulogio Soto, Maila Guilhon and Sergio Cambronero.
- June 2019: DOSI hosted ‘Deep-Ocean Climate Connections’, an expert workshop on climate change and deep-seabed mining at Scripps Institution of Oceanography, USA.
- May 2019: DOSI Minerals WG members submitted a Commentary on the “Draft High Level Action Plan and Priorities and the Report of the Secretary-General on the Implementation of the Strategic Plan for the International Seabed Authority: Draft Performance Indicators for the 2019-2023 period” issued earlier this year.
- May 2019: The ISA workshop, “The Development of Standards and Guidelines for Activities in the Area”, hosted in Pretoria, South Africa was attended by Diva Amon and Amber Cobley on behalf of DOSI.
- Early career scientists Maila Guilhon (Brazil) and Sergio Cambronero (Costa Rica) representing DOSI at ISA
- February 2019: DOSI attended the first part of the ISA 25th Session, presenting three policy briefs, delivering four interventions and hosting a side event. The DOSI delegation consisted of Jeff Drazen, Aline Jaeckel, Julie Huber, Verena Tunnicliffe, Philip Turner, Jessie Perelman and Diva Amon.
- February 2019: DOSI WG member paper published: Tunnicliffe et al (2019) Strategic Environmental Goals and Objectives: Setting the basis for environmental regulation of deep seabed mining. Marine Policy
- DOSI Minerals WG Past Activities 2013-18.
2024
Implementing a ‘Sufficient Information Requirement’ for Deep-sea Mining
The Mitigation Hierarchy: Polymetallic Nodules and Sulphides
Life Moves Slowly in the Deep Ocean: The Challenge of Timescales in Ocean Restoration
2023
What Do Deep-Ocean Ecosystems Do for You?
Latest Science on the Impacts of Deep-Sea Mining on Benthic and Pelagic Ecosystems and Fisheries
2022
What Does the Deep Ocean Do For You?
2021
The Necessity of Traditional Knowledge for Management of Deep-Seabed Mining
2020
Ecological Connectivity: Implications for Ocean Governance (Minerals/BBNJ)
2019
Climate Change Considerations are Fundamental to Sustainable Management of Deep-Seabed Mining 2019
Strategic Environmental Goals and Objectives for Deep-Seabed Mining 2019
2018
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Collaborate with us to advance deep-sea climate science. Engage in meetings, contribute to policy briefs and publications, and participate in international events.
WG members are encouraged to actively engage with WG communications and meetings, as these are where further information will be provided on workshops, outputs such as policy briefs and publications, as well as event attendance. Please note: DOSI Ambassadors who are involved key meetings are selected according to our DOSI internal policy and at the discretion of the WG leads.
Working Group Leads

Sabine Gollner
NIOZ, Netherlands

Patricia Esquete
CESAM, Portugal

Jesse van der Grient
SAERI, Falkland Islands