Great Nicobar Coral Translocation: Galathea Bay Port and Ecology Explained

Current issue: Coral colonies and giant clams in the Galathea Bay project influence area may be affected by construction of the proposed transshipment port. To reduce biodiversity loss, the Zoological Survey of India has identified four possible receiving sites on the west coast of Great Nicobar Island.

Coral translocation: It means carefully removing living coral colonies from a threatened site and fixing them at a suitable alternative site where conditions such as water depth, light, temperature, salinity, currents and substrate are expected to support survival.

Why it matters: Coral reefs are not just “rocks” or “plants”. They are living colonies of tiny animals called polyps. They create reef structures that support fish, molluscs, crustaceans, turtles and coastal livelihoods.

UPSC link: The issue connects environment, biodiversity, coastal regulation, development projects, environmental clearance, Schedule-I species and sustainable development.

Integrated infrastructure project: The Great Nicobar Project aims to develop Great Nicobar Island as a strategic maritime and economic hub. Its main components are an International Container Transshipment Terminal, a greenfield international airport, a power plant and a planned township.

Strategic location: Great Nicobar lies close to the East-West international shipping route and near the Malacca Strait region. The proposed port is expected to reduce India’s dependence on foreign transshipment hubs such as Colombo, Singapore and Klang.

Official scale: The PIB backgrounder states that the project includes a 14.2 million TEU transshipment terminal, 4000 peak-hour-passenger airport, 450 MVA power plant and township.

Environmental sensitivity: The same island is also ecologically fragile, with tropical evergreen forests, coral reefs, turtle nesting sites, endemic birds and tribal communities such as the Shompen and Nicobarese.

Location: Galathea Bay is located in Great Nicobar Island, the southernmost major island of the Andaman and Nicobar archipelago.

Ecological importance: Galathea Bay is known for marine biodiversity and has been described as one of the important nesting areas for leatherback turtles. The Indian Express report notes that Galathea Bay is among the crucial global nesting sites for leatherback sea turtles.

Strategic importance: Galathea Bay has deep-water potential and is located close to major international shipping routes. This is why it has been selected for a transshipment terminal.

Core conflict: The issue is not “development versus environment” in a simplistic way. It is about whether a strategically important infrastructure project can be executed with scientifically sound safeguards in one of India’s most fragile island ecosystems.

Living marine ecosystems: Coral reefs are underwater ecosystems formed mainly by reef-building corals. Corals are animals belonging to the phylum Cnidaria.

Coral polyps: A coral colony is made up of thousands of small organisms called polyps. These polyps secrete calcium carbonate, which forms the hard reef structure.

Symbiotic relationship: Many corals live in association with microscopic algae called zooxanthellae. These algae provide food through photosynthesis, while corals provide shelter and nutrients.

High biodiversity value: Coral reefs are called the “rainforests of the sea” because they support a very high diversity of marine life.

Climate sensitivity: Coral reefs are vulnerable to warming seas, bleaching, pollution, sedimentation, ocean acidification and physical damage.

Marine molluscs: Giant clams are large marine bivalve molluscs found in shallow coral reef ecosystems.

Ecological role: They filter water, support reef productivity and provide microhabitats for other marine organisms.

Legal protection: Certain giant clam species are listed under Schedule I of the Wild Life Protection Act, 1972, giving them the highest legal protection in India. India Code-linked schedules list giant clam species such as Tridacna squamosa, Hippopus hippopus and Tridacna maxima.

UPSC relevance: Giant clams can be asked in Prelims as protected marine fauna associated with coral reef ecosystems.

Survival uncertainty: Coral translocation does not guarantee survival. Corals may die due to stress during removal, transport, reattachment or adaptation to the new site.

Site suitability: The receiving site must have similar ecological conditions. Even small changes in depth, turbidity, currents or sediment load can affect survival.

Climate risk: Marine heatwaves and coral bleaching can reduce the success of translocation even if the physical relocation is done properly.

Monitoring challenge: Long-term monitoring is essential. Short-term survival after translocation does not necessarily mean ecological recovery.

Conservation concern: Critics argue that coral translocation should not become a routine justification for disturbing natural reef systems. It should be treated as a mitigation measure of last resort, not as a substitute for avoidance.

Scientific institution: The Zoological Survey of India is India’s premier faunal survey and taxonomy institution. It provides data for in-situ conservation of species across ecosystems.

Role in this case: ZSI is responsible for coral translocation planning, identifying suitable receiving sites, using GPS-based monitoring and obtaining legal approvals before handling protected species.

Administrative link: ZSI functions under the Ministry of Environment, Forest and Climate Change.

UPSC angle: ZSI is important for Prelims as an institution connected with faunal surveys, taxonomy, biodiversity documentation and conservation planning.

Environment Protection Act, 1986: This is the umbrella law under which key environmental notifications such as EIA and CRZ/ICRZ notifications are issued.

EIA Notification, 2006: It provides the environmental clearance process for specified projects. PIB notes that the Great Nicobar Project received prior environmental clearance under the EIA Notification, 2006 after screening, scoping, public consultation and appraisal.

ICRZ Notification, 2019: Island Coastal Regulation Zone rules regulate activities in coastal stretches of islands such as Andaman and Nicobar and Lakshadweep. The Great Nicobar project clearance is linked to ICRZ conditions.

Wild Life Protection Act, 1972: Handling of protected species such as corals and giant clams requires legal approval because several marine species are protected under Schedule I.

Forest Conservation framework: The project also involves forest diversion and compensatory afforestation issues.

Constitutional provisions: Article 48A directs the State to protect and improve the environment, while Article 51A(g) makes it a fundamental duty of citizens to protect the natural environment.

Environmental adjudication: NGT is a specialised tribunal for environmental disputes involving multidisciplinary issues.

Great Nicobar case: In February 2026, NGT upheld the clearance conditions related to the project and held that the ICRZ Notification, 2019 was not violated. It also directed coral reef protection and coral regeneration in identified areas.

UPSC significance: The case shows how environmental governance in India involves scientific institutions, expert committees, statutory clearances, tribunals and compliance monitoring.

Biosphere reserve: UNESCO describes Great Nicobar as the southernmost island of the Nicobar archipelago, covering tropical evergreen forest ecosystems and hosting rich biodiversity, including about 650 species of angiosperms, ferns, gymnosperms and bryophytes, and more than 1,800 recorded faunal species.

Protected areas: Great Nicobar Biosphere Reserve includes Campbell Bay National Park and Galathea National Park.

Endemism: Island ecosystems often have species found nowhere else. Great Nicobar has important endemic and restricted-range fauna such as the Nicobar Megapode and Nicobar macaque.

Marine-terrestrial linkage: The island has rainforests, mangroves, beaches, coral reefs and intertidal habitats. Damage to one part can affect the larger ecological chain.

Communities involved: Great Nicobar is inhabited by Shompen and Nicobarese communities. PIB states that the Shompen population is about 237 and Nicobarese about 1,094.

PVTG angle: The Shompen are a Particularly Vulnerable Tribal Group. Their low population, relative isolation and dependence on forests make them highly vulnerable to disease, displacement, cultural disruption and ecological changes.

Government position: PIB states that no displacement of Shompen and Nicobarese communities is proposed and that monitoring mechanisms have been created for tribal welfare.

Constitutional link: Article 338A relates to the National Commission for Scheduled Tribes. PIB states that the project implementation framework is aligned with Article 338A(9), with emphasis on Scheduled Tribe and PVTG interests.

Coral reef damage: Port construction, dredging, sedimentation and changes in water quality can affect coral survival.

Turtle nesting disturbance: Artificial lighting, noise, movement of people, coastal construction and beach alteration can affect leatherback turtle nesting.

Forest diversion: The project involves diversion of forest land. PIB states that 1.82% of the total forest cover of Andaman and Nicobar Islands is to be diverted.

Seismic and disaster risk: Great Nicobar lies in a seismically sensitive and cyclone-prone region. PIB notes that risk assessment has considered tsunamis, earthquakes, cyclones and industrial risks.

Biodiversity fragmentation: Large infrastructure can fragment habitats and increase human pressure on island ecosystems.

Maritime trade: India currently depends significantly on foreign transshipment hubs. A deep-water port at Great Nicobar can help India capture transshipment traffic.

Indo-Pacific location: Great Nicobar lies near important sea lanes connecting the Indian Ocean, Malacca Strait and Southeast Asia.

National security: The project strengthens India’s maritime presence in the Andaman Sea and eastern Indian Ocean region.

Economic development: Port-led infrastructure can improve connectivity, logistics, tourism and employment, provided ecological and social safeguards are effective.

Development argument: Strategic infrastructure in Great Nicobar can improve India’s maritime capacity, reduce dependence on foreign ports and support national security.

Environment argument: Fragile island ecosystems, coral reefs, turtle nesting sites, endemic fauna and PVTG communities require strict protection.

Governance answer: The UPSC approach should not be one-sided. It should argue for scientific assessment, transparent compliance, independent monitoring, community consultation, biodiversity offsets only where scientifically valid, and strict adherence to legal safeguards.

Adopt avoid-minimise-restore-offset hierarchy: Coral translocation should be used only after avoiding and minimising damage as far as possible.

Ensure independent scientific monitoring: Survival of translocated corals and giant clams should be monitored by independent marine ecologists, not only implementing agencies.

Use transparent GPS-based data: GPS tagging, survival rates, mortality rates and reef health reports should be periodically placed in the public domain.

Protect turtle nesting beaches: Lighting controls, seasonal work restrictions, no-construction buffers and satellite tagging of turtles should be prioritised.

Strengthen ICRZ compliance: Coastal zone maps, project boundaries, coral reef areas and permitted activities should be regularly reviewed.

Ensure tribal safeguards: Shompen and Nicobarese welfare committees must include anthropologists, public health experts and representatives familiar with tribal rights.

Build disaster resilience: Given seismic, cyclone and tsunami risks, all infrastructure should follow high-standard disaster-resilient design.

Prefer nature-based solutions: Mangroves, reefs, beaches and forests should be treated as natural protective infrastructure against storms and coastal erosion.

Create long-term ecological baseline: Before major construction, baseline data on corals, fish, turtles, birds, crabs, crocodiles and mangroves must be scientifically documented.

Balance strategic and ecological goals: India’s maritime strategy should be pursued with credible safeguards so that national security and ecological security reinforce each other.