Q.Critically evaluate the various resources of the oceans which can be harnessed to meet the resource crisis in the world.
Model Answer
View this Question In PYQ RealmIntroduction
Covering approximately 71% of the Earth's surface, the global oceans represent the ultimate frontier for natural resources. As terrestrial resources face rapid depletion due to overexploitation, population growth, and industrialization, marine resources—ranging from minerals and energy to biological compounds—hold immense potential to address the global resource crisis. However, harnessing these resources presents a complex mix of technological, economic, and environmental challenges.
Body Analysis
Evaluation of Major Ocean Resources
| Resource Category | Key Potential | Major Challenges & Risks |
|---|---|---|
| 1. Mineral Resources | Polymetallic Nodules: Abundant on deep-sea floors (e.g., Clarion-Clipperton Zone, Indian Ocean). Rich in manganese, nickel, copper, and cobalt—critical for the green energy transition (batteries, EVs). | • Deep-sea mining is technologically difficult and highly expensive. • Threatens fragile, unexplored benthic ecosystems and biodiversity. |
| 2. Fossil Fuels | Offshore Oil & Gas: Continental shelves (e.g., Gulf of Mexico, North Sea, South China Sea) provide over 30% of global oil and gas production. | • High risk of catastrophic oil spills (e.g., Deepwater Horizon). • Continued extraction contradicts global climate commitments to phase out fossil fuels. |
| 3. Renewable Energy | Tidal, Wave & OTEC: Predictable tidal energy (e.g., Bay of Fundy) and Wave energy. Ocean Thermal Energy Conversion (OTEC) utilizes deep-to-surface temperature gradients in tropical waters (e.g., Indian Ocean). | • Technologies are still in developmental stages and economically uncompetitive with solar/wind. • High installation costs and potential disruption to local marine habitats. |
| 4. Biological Resources | Fisheries & Aquaculture: Marine fisheries provide protein for billions. Aquaculture now accounts for over 50% of global seafood, ensuring food security. | • Overfishing has depleted nearly 90% of global wild fish stocks. • Unsustainable aquaculture causes coastal pollution, habitat destruction (e.g., mangroves), and disease outbreaks. |
| 5. Marine Biotechnology | Pharmaceuticals: Marine organisms (sponges, algae) yield bioactive compounds for antibiotics, anti-inflammatory, and anti-cancer drugs. | • Extremely high research and development costs. • Risk of biopiracy and over-extraction of rare marine species. |
| 6. Freshwater | Desalination: Provides vital drinking water to hyper-arid regions (e.g., Middle East, Chennai in India). | • Highly energy-intensive process. • Produces toxic, hyper-saline brine waste that harms coastal marine life when discharged. |
| 7. Carbon Sequestration | Blue Carbon: Mangroves, salt marshes, and seagrasses capture and store up to 10 times more carbon per hectare than terrestrial forests. | • These coastal ecosystems are highly threatened by urban development, pollution, and aquaculture expansion. |
Critical Assessment: The Way Forward
While the oceans offer a vast repository of resources, their exploitation cannot follow the same destructive path as terrestrial mining. The primary challenges are:
- Geopolitical Conflicts: Overlapping claims in resource-rich areas like the South China Sea create geopolitical friction.
- Regulatory Gaps: The International Seabed Authority (ISA) struggles to balance deep-sea mining regulations with environmental protection under the UNCLOS framework.
- Ecological Degradation: Marine pollution, ocean acidification, and warming are already weakening the oceans' natural resilience.
Conclusion
Oceans possess the potential to solve the global energy, food, water, and mineral crises. However, a transition from blind exploitation to a sustainable "Blue Economy" is imperative. Harnessing marine resources must be guided by scientific research, international cooperation, robust regulatory frameworks, and green technologies to ensure that we do not cause irreversible damage to the planet's largest life-support system.