Flipping Good News : Discover of Rare Dolphins
The Wildlife Conservation Society (WCS) announced the discovery of a huge population of rare dolphins in South Asia. Using rigorous scientific techniques, WCS researchers estimate that nearly 6,000 Irrawaddy dolphins, which are related to orcas or killer whales, were found living in freshwater regions of Bangladesh’s Sundarbans mangrove forest and adjacent waters of the Bay of Bengal—an area where little marine mammal research has taken place up to this point. Prior to this study, the largest known populations of Irrawaddy dolphins numbered in the low hundreds or less.
“With all the news about freshwater environments and state of the Oceans, WCS’s discovery that a thriving population of Irrawaddy dolphins exists in Bangladesh gives us hope for protecting this and other endangered species and their important habitats,†said Dr. Steven E. Sanderson, President and CEO of the Wildlife Conservation Society. “WCS is committed to conservation of these iconic marine species from dolphins, sea turtles, sharks to the largest whales.â€
The Irrawaddy dolphin grows to some 2 to 2.5 meters in length (6.5 to 8 feet) and frequents large rivers, estuaries, and freshwater lagoons in South and Southeast Asia. In Myanmar’s Ayeyarwady River, these dolphins are known for “cooperative fishing†with humans, where the animals voluntarily herd schools of fish toward fishing boats and awaiting nets. With the aid of dolphins, fishermen can increase the size of their catches up to threefold. The dolphins appear to benefit from this relationship by easily preying on the cornered fish and those that fall out of the net as the fishermen pull it from the water. In 2006, WCS helped establish a protected area along the Ayeyarwady River to conserve this critically endangered mammal population.
WCS is currently working closely with the Ministry of Environment and Forests in Bangladesh on plans for establishing a protected area network for both Irrawaddy and Ganges River dolphins in the Sundarbans mangrove forest. Funding is critical to sustaining these activities along with WCS’s long-term efforts to study the effects of climate change on this habitat, support sustainable fishing practices, and develop local ecotourism projects.