Out of the largest mammals on earth Sri Lanka is the place where you can observe the largest land mammal the Elephant and the largest sea mammal the Whale.Whales breathe air through blowhole(s) into lungs (unlike fish who breathe using gills). Whales have sleek, streamlined bodies that move easily through the water. Whales feed on small fish. The biggest whale is the blue whale, which grows to be about 94 feet (29 m) long – the height of a 9-story building. These enormous animals eat about 4 tons of tiny krill each day, obtained by filter feeding through baleen. Adult blue whales have no predators except man. The smallest whale is the dwarf sperm whale which as an adult is only 8.5 feet (2.6 m) long.
At Udupila, Mirissa, Sri Lanka whale observers gather to watch an awesome display of power & beauty of one of the largest, intelligent, aquatic mammals on this earth. Otherthan Mirissa,west coast in locations from Alankuda beach in Kalpitiya, Mirissa or Dondra Point of down south, east coast of Trincomalee in Sri Lanka is the main ports of Whale and Dolphin watching in Sri Lanka. Whale and dolphin sightings are additionally available in the western coastal cities of Alutgama, Ambalangoda and Hikkaduwa.
A high concentration of blue whales and sperm whales has been spotted in the seas off Dondra Head along the deep south coast of Sri Lanka during the months of January to April. Alankuda beach in Kalpitiya is the best places if you are interested in seeing dolphins. During November to March is the best season to go Dolphin Watching off Kalpitiya.