Annual Dolphin census begins at Chilika Lake with GPS-based survey

In a key step towards strengthening wildlife conservation, authorities have launched the annual dolphin census at Chilika Lake. The systematic counting exercise, beginning early this morning, will help assess the presence and movement of dolphins across different sectors of the lagoon.

The teams beginning their work at 6 am. The exercise will continue for several days, concluding on the 22nd January 2026. A total of 18 specialised teams have been deployed, each comprising an expert and five to six trained enumerators.

Teams, Routes and Technology

Ten teams departed from Balugaon while eight teams started from Satapada, collectively covering 18 designated routes. The census will span the southern, northern and central sectors of Chilika, along with the outer channel. GPS-enabled boats are being used to follow fixed transect lines, ensuring accurate data collection. Binoculars, range detectors, drones and compasses are assisting the teams during the count.

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"The dolphin census began today at around 6 am, with teams starting from two GPS base points at Satapada and Balugaon. A total of 18 teams have been formed to cover different routes across the lake. Some of these routes are longer, while others are shorter, but all 18 routes have been clearly defined. We are following the dolphin estimation methodology prescribed by the Chilika Development Authority. Volunteers from organisations such as WWF and WTI, along with representatives from OUAT, other government and non-government organisations, and wildlife experts, are participating in the exercise. We expect the entire census operation to be completed by 12 noon,” said Wildlife Forest Division DFO, Balugaon Amlan Nayak

Boat Movement Restricted for Smooth Census

To avoid disturbance during the counting process, Wildlife authorities have requested all motor boat associations to halt boat operations in Chilika from 6 am to 12 noon.

With systematic planning and strict monitoring, the ongoing dolphin census is expected to provide crucial insights into the health and population trends of dolphins in Chilika, reinforcing conservation efforts at Asia’s largest brackish water lagoon.