Dr. Rahul Sharma retired as a Chief Scientist from the National Institute of Oceanography in Goa, India. He received his PhD in Marine Science from Goa University in 1997. His research interests include development of underwater photography for deep-sea exploration, environmental impact assessment for deep-sea mining, and application of exploration data for deep-sea mining and environmental conservation. He has undertaken several assignments for international research organizations, academic institutions and the International Seabed Authority. He is the editor of the books ‘Deep-sea mning (2017)’ and ‘Environmental issues of deep-sea mining (2019) published by Springer.

• Chapter1. Deep-sea mining — historical perspectives.- Chapter2. Approach towards deep-sea mining — current status and future requirements.- Chapter3. Estimates of metals contained in abyssal manganese nodules and ferromanganese crusts in the global ocean.- Chapter4. Geological Characterization of Ferromanganese Crust Deposits in the NW Pacific Seamounts for Prudent Deep-sea Mining.- Chapter5. Secondary Ion Mass Spectrometry Microanalysis of Platinum in Hydrogenetic Ferromanganese Crusts.- Chapter6. A precautionary approach to developing nodule collector technology.- Chapter7. Mining and Processing of Seafloor Massive Sulfides:Experiences and Challenges.- Chapter 8. Comparative advantages of the mineral processing of deep sea polymetallic nodules over terrestrial ores.- Chapter9. Exploring the use of renewable resources for processing of deep-sea minerals.- Chapter10. Reductive Ammonia Leaching Process for Metal Recovery from Manganese Nodules: Can there bea Zero Waste Approach?.- Chapter11. Natural variability versus anthropogenic impacts on deep-sea ecosystems of importance for deep-sea mining.- Chapter12. Comprehensive understanding of seafloor disturbance and environmental impact scenarios.- Chapter13. Adaptive Management as a tool for effective environmental management of deep-sea mining.- Chapter14. Integrated environmental management of the ecological impacts from  seafloor massive sulfide mining — perspectives from the Kermadec Volcanic Arc, New Zealand.- Chapter15. Analysis of different models for improving the feasibility of deep-sea mining.- Chapter16. Conceptual 3D modelling and direct block scheduling of a massive seafloor sulfide occurrence.- Chapter17. Risk assessment in deep-seabed mining.- Chapter18. An evaluation of the payment regime for deep seabed polymetallic nodule mining in the Area.- Chapter19. Sharing Financial Benefits from Deep Seabed Mining: the case fora Seabed Sustainability Fund.- Chapter20. Achieving Effective Seabed Mining Regulation and Management: A Missing Link.- Chapter21. Operational aspects of implementing regulatory frameworks to manage deep-sea mining activities.- Chapter22. Traditional and socio-ecological dimensions of seabed resource management and applicable legal frameworks in the Pacific Island States- Chapter23. Safeguarding the interests of developing states within the context of deep-sea mining in the Area.