Bihar board URL collections for 10th, 12th, University student

Dolphins are cetacean mammals, also well known as SOS, Susu or Hihu dolphin in bihar. The river dolphins are found in the rivers Ganges, Brahmaputra and their tributaries.They were found in large numbers before a few years. But now their number has come down considerably due to various human activities like fishing (gillnetting), poaching, damming (Farakka barrage) in Ganges and other dams. 
The average weight of a dolphin is 10-15 whereas maximum 100kg, Length approx 8ft.



“Operation Dolphin at Baldiya Hat Kishanganj” A Successful Rescue and Translocation Operation of  National Aquatic Animal dolphin, (gangetica)

9th March 2013 is the historic day in wildlife conservation effort of Deptt. of
Environment and Forests, Government of Bihar, as on this day a rescue and translocation operation of two stranded Twin stranded dolphin at Baldia Hat, Kishanganj dolphins, ‘National Aquatic Animal of India,were successfully carried on by a dedicated team of Forest Department. It is worthwhile to mention that it is the first successful translocation of two dolphins in Bihar and in India, also. This operation was unique in nature as the two dolphins were captured from River Donk, a tributary of River Mahananda, at Baldia Hat in the district of Kisanganj and translocated to River Mahananda twenty kms away from the capture site, and the entire operation was completed within a time span of only four hours. The operation was meticulously
planned and Camped there for almost a week and made reconnaissance of the area, studied
the problem, studied the books, identified the release site and set strategies for capturing and
releasing the dolphin about 20 kms from away from the capture site.

On 1st March 2013 a news spread like a wild fire in the entire Kishanganj and North Dinajpur District of West Bengal that two dolphins have been stranded in the river Donk in a stretch of 1 km of water and the dolphins are visible. Thousand of peoples started gathering there every day for watching the movement/ activities of the dolphins, which was an unique sight for them .Initially, the people created a lot of chaos and disturbance by clapping, blowing whistles and making noises. People treated it like a dolphin tourism spot. The Environment & forest department, Bihar immediately established a camp on the site along with his forest guards and also requisitioned extra Police force from the District administration, Kishanganj to control the crowd and safeguard the dolphins. The Forest department started feeding the starving dolphins by releasing 10kg of small fishes every day in the river. It was, ultimately decided to translocate these two dolphins from Donk river to Mahanada river for their safety, food, health and conservation. Dolphins were Translocated by ‘Dry Method’ to River Mahananda . As there was no any specific set of instructions or guideline for the mode of dolphin Rescue and translocation operation in the literature, So Department created different logistics locally by his own imagination and experience, The Environment & forest department, Bihar trained 25 fishermen for three days for safely picking up the dolphins (not catching) from the river. The West Bengal Forests department also supported this operation by providing animal capture nets and moral support to the team.