The waters off the coast of Trincomalee are generally clear and home to vibrant coral formations, numbering over the hundreds; making it an amazing place for snorkelling. The coral reefs are teeming with around 300 species of vibrant tropical fish. Snorkellers will see plenty of clown fish, eels, rays, groupers, as well as a variety of sea turtles. The docile black tip reef sharks are a common sight, however, they are typically shy of people so getting near them without spooking them off can be challenging. The reefs near Pigeon Island are perhaps the most famous snorkelling site, however, there are plenty of other places to try it.