Deep-sea discovery, environmental responsibility

Why in News ?

India is expanding deep-sea mineral exploration while balancing economic, technological, and strategic ambitions against crucial ecological preservation and governance responsibilities.

UPSC Relevance

Prelims

Mains

GS1, Distribution of Key Natural Resources across the world 

GS3, Conservation, Environmental Pollution and Degradation, Environmental Impact Assessment.

India’s Footprint in the Deep-Sea Sphere

• ISA Contracts: India holds 3 International Seabed Authority (ISA) exploration contracts covering ~95,000 sq km across the Central Indian Ocean Basin, Central Indian Ridge, and Carlsberg Ridge.
• Resource Potential: Exploration has identified an estimated 366 million tonnes of polymetallic nodules containing key strategic metals like nickel, copper, cobalt, and manganese.
• Technological Milestones: Development of deep-sea mining machines tested at ~5,270 m depth by NIOT and the MATSYA-6000 human submersible under the Deep Ocean Mission.
• Biodiversity Research: Surveys across 19 seamounts studied ~1,300 deep-sea organisms, identifying nearly 23 species new to science.

Deep-Sea Initiatives of India

• Deep Ocean Mission (DOM): Flagship national initiative for ocean technology, underwater robotics, and environmental impact assessments.
• Samudrayaan Project: Manned mission developing the MATSYA-6000 submersible to carry aquanauts safely to ocean depths.
• Baseline Surveys: Ecological mapping across seamounts to evaluate benthic habitats prior to potential exploitation.
• Pioneer Investor Status: Granted pioneer investor status by the UN/ISA in 1987 for deep-seabed exploration.
• Polymetallic Sulphides Exploration: 15-year ISA contract for exploring hydrothermal sulphides along 10,000 sq km of mid-oceanic ridges.
• Low Temperature Thermal Desalination (LTTD): NIOT technology converting deep ocean cold water to fresh drinking water in coastal/island regions like Lakshadweep.
• Ocean Thermal Energy Conversion (OTEC): Offshore renewable energy projects utilizing oceanic temperature gradients.
• Autonomous Observation Networks: INCOIS deployment of deep-sea Slocum gliders and biogeochemical Argo floats for climate and ocean tracking.

Importance of Deep-Sea Missions Across Various Spheres

• Blue Economy & Mineral Security: Provides access to essential transition metals (nickel, cobalt, copper, manganese) for battery storage, EV manufacturing, and green technology.
• Strategic & Geopolitical Sovereignty: Strengthens India’s leadership in the Indian Ocean Region (IOR) and secures non-land-based raw material supply chains.
• Scientific & Technological Advancement: Drives indigenous innovation in extreme-pressure engineering, deep-sea robotics, extremophile (deep sea microbes) bioprospecting, and oceanographic/monsoon modeling.
• Ecological & Environmental Governance: Aligns with Mission LiFE, SDGs, and Nature-based Solutions, positioning India as a global leader in ocean conservation and ecological stewardship.

Arguments Against Conventional Deep-Sea Mining 

• Capability vs. Necessity: Technological capability to mine does not grant automatic ecological permission.
• Irreversible Ecological Damage: Seabed mining physically disrupts delicate benthic ecosystems that are poorly understood and impossible to restore.
• Alternative Solutions: Strategic mineral demands can be met via recycling, circular economy practices, substitution, and lower consumption under Mission LiFE.
• Redefining Progress: True scientific maturity involves knowing where to refrain from exploitation and preserving natural capital.
• Leadership Opportunity: India can establish global leadership in ecological governance by framing the ocean floor as a precious ecological asset rather than a mineral site.

Broader Challenges of Deep-Sea Missions

• Extreme Physical Conditions: Extreme hydrostatic pressure (>600 atm), dark and near-freezing environments, and severe saltwater corrosion.
• Environmental Degradation: Massive sediment plumes choking marine species, acoustic disruption, and heavy metal bioaccumulation in ocean food webs.
• High Economic & Capital Costs: Massive capital requirements for deep-water vessels, submersibles, and specialized equipment with uncertain commercial viability.
• Complex International Regulation: Navigating International Seabed Authority (ISA) compliance, legal uncertainties, and international common heritage mandates.

India must align its Deep Ocean Mission with sustainable development goals (SDG 14 – Life under water), advancing a responsible Blue Economy that balances technological innovation and resource security with deep-sea ecological preservation.

Practice MCQ 

Q. Consider the following statements regarding India’s Deep Ocean Mission (DOM) and deep-sea exploration initiatives:

1. The MATSYA-6000 is an indigenously developed human submersible designed to carry aquanauts to depths of 6,000 meters under the Samudrayaan project.
2. India holds exploration contracts granted by the International Seabed Authority (ISA) for polymetallic nodules in the Central Indian Ocean Basin.
3. The Deep Ocean Mission is implemented by the Ministry of Environment, Forest and Climate Change (MoEFCC) as the nodal agency.
4. India’s exploration activities in international seabed areas extend to polymetallic sulphides along the mid-oceanic ridges.

Which of the statements given above are correct?

(a) 1 and 3 only

(b) 2 and 4 only

(c) 1, 2, and 4 only

(d) 2, 3, and 4 only

Answer: C

Practice Question

​”India’s technological advancements under the Deep Ocean Mission reflect its growing blue economy ambitions, yet they present a critical dilemma between mineral security and deep-sea ecological preservation.” Discuss.( 10 marks)

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