The Singing Fish of Batticaloa

"It is said to be heard the clearest on a full moon night... One has to go by boat, plunge an oar into the water, put the other end of the oar to one's ear, and listen..."

Since the 18th century, Tamil fishermen have claimed to navigate by the mysterious music of the singing fish of the Batticaloa lagoon in eastern Sri Lanka. The fishermen's ancient name for the creature is oorie coolooroo