Published on: December 23, 2022

Dolphin census

Dolphin census

Why in news? The annual census of dolphins began in Odisha’s Bhitarkanika national park and Gahirmatha marine sanctuary


  • Team is equipped with binoculars, GPS sets, rangefinders and data recording sheets for a foolproof headcount of the dolphins
  • The exercise was being conducted using the ‘Transact Survey Method’, followed in worldwide
  • The Odisha coast has emerged as an ideal habitat for dolphins with an impressive rise of 33% in their population in the last census.
  • Six species of dolphins– Irrawaddy, Bottlenose, Humpback, Striped, Finless and Spinner — were recorded during the last census

Bhitarkanika National Park

  • Location: Northeast Kendrapara district in Odisha in eastern India.
  • It has obtained the status of a Ramsar site
  • Surrounded by Bhitarkanika Wildlife Sanctuary, Gahirmatha Beach and Marine Sanctuary are to the east, separating swamp region and mangroves from the Bay of Bengal
  • Rivers: Brahmani, Baitarani, Dhamra, Pathsala.
  • It hosts many mangrove species, and is the second largest mangrove ecosystem in India.
  • Flora /fauna: Saltwater crocodile, Indian python, king cobra, black ibis, darters

Gahirmatha Marine Sanctuary

  • It is a marine wildlife sanctuary located in Odisha
  • World’s largest nesting beach for Olive Ridley Turtles.
  • Rivers: Extends from Dhamra River in the north to Brahmani river south.
  • One of the world’s most important nesting beaches for turtles.