Batticaloa Lagoon. Before you come.

Batticaloa Lagoon is the defining feature of this east coast city — a vast body of water dotted with small islands and fringed by mangroves. Boat tours here let you explore the islands and spot birdlife, including the famous 'singing fish' that locals claim make a musical sound under the full moon.

Visitors often come expecting to hear the famoussinging fish(actually a type of catfish or croaker that supposedly makes musical sounds under water), but that it's rarely heard, especially during the day. The guides will play a recording or claim to hear it, but actual live sounds are elusive. The real draw is the peaceful boat ride through mangroves, with birdlife and local fishing scenes—not the fish concert.

Late afternoon tours are popular for sunset views, but midday trips can be brutally hot with little shade. Some boatmen are friendly but may rush the tour or add unsolicited stops at souvenir shops. The lagoon itself is scenic but not pristine—some areas have floating debris or algae. Its a calm, low-key experience best enjoyed for the atmosphere, not the hype.