On a stretch of the Ayeyarwady river, also known as the Irrawaddy river, near Myanmar’s Mandalay, fishermen from six villages work hand-in-fin with 26 Irrawaddy dolphins in a unique collaboration. Taught to do so since childhood, the fishermen cooperatively fish the river with the assistance of the dolphins. The tradition, origin unknown, is said to have been in practice since the 1860s.