Sri Lanka is one of the world’s finest whale watching destinations, with waters off its southern and eastern coasts offering reliable sightings of blue whales, the largest animals ever to have lived, alongside sperm whales, Bryde’s whales, and spectacular spinner dolphins. The prime season off Mirissa runs from November to April, when calm, clear conditions provide excellent offshore visibility. Guided excursions are operated on well-maintained vessels with experienced crew and marine biologists providing fascinating commentary throughout. The sight of a blue whale surfacing beside a small boat, exhaling a vast plume of spray before arching beneath the surface, is one of the most moving wildlife encounters available anywhere on earth.