Key Facts and Data Points

  • Scientific name: Dugong dugon
  • Size: Up to 10 ft (3 m) in length, ~420 kg weight
  • Lifespan: Up to 70 years
  • Reproductive cycle: Sexual maturity at 9‑10 years; calving interval 3‑5 years
  • Conservation status: Vulnerable (IUCN), Appendix I CITES, Schedule I Wildlife (Protection) Act, 1972
  • Distribution in India: Gulf of Kutch, Gulf of Mannar‑Palk Bay, Andaman & Nicobar Islands
  • Habitat: Shallow (<10 m), warm coastal waters; dependent on seagrass meadows
  • Seagrass diversity in India: >13 species in Gulf of Mannar & Palk Bay; limited in Lakshadweep, Kachchh, Andhra Pradesh, Odisha

Background and Context

  • The Expert Appraisal Committee (EAC) of MoEFCC has recommended a major redesign of the proposed International Dugong Conservation Centre at Manora, Thanjavur, Tamil Nadu.
  • The site falls within Coastal Regulation Zone (CRZ)‑III (No Development Zone) and overlaps CRZ‑I areas that contain critical mangroves and seagrass meadows.
  • Seagrass ecosystems act as carbon sinks, stabilize the seabed, support fisheries, and provide the sole food source for dugongs.

Significance for India / Governance / Policy

  • Dugongs are indicator species for the health of seagrass habitats; their decline signals broader marine ecosystem degradation.
  • Protecting dugongs aligns with India’s commitments under the Convention on Biological Diversity (CBD) and CITES.
  • The redesign of the conservation centre must comply with CRZ regulations, the Coastal Regulation Zone Notification, 2019, and the National Coastal Zone Management Plan.
  • Effective conservation requires integrated management of mangroves, seagrass, and fisheries, linking biodiversity with livelihoods.

Related Constitutional / Legal Provisions

  • Article 48A of the Constitution: Protection and improvement of environment and safeguarding of forests and wildlife.
  • Wildlife (Protection) Act, 1972 – Schedule I protection for dugong.
  • CITES Appendix I – Prohibits international trade of dugongs and their products.
  • Coastal Regulation Zone (CRZ) Notification, 2019 – Governs permissible activities in CRZ‑I and CRZ‑III zones.

Conservation Measures

  • Habitat protection: Designate seagrass meadows as Marine Protected Areas (MPAs).
  • Community involvement: Engage local fishers in monitoring and sustainable fishing practices.
  • Research & monitoring: Regular population surveys, genetic studies, and health assessments.
  • Policy integration: Align dugong conservation with the National Biodiversity Action Plan and Blue Economy initiatives.

References

  • Threat to Dugong Population in India (link provided in article)
  • Ministry of Environment, Forest and Climate Change – CRZ Notification, 2019
  • IUCN Red List – Dugong dugon