The waters off Mirissa between November and April are among the world’s most reliable blue whale destinations – deep-water channels that the animals follow on their migration, giving access to sustained, close-range encounters with the largest creature in the history of life on earth. Island Pulse Travels also coordinates dolphin and whale watching from Trincomalee on the east coast (May to September) and dolphin encounters at Kalpitiya on the northwest coast, where spinner dolphin super-pods of extraordinary size are regularly encountered year-round.