Kalpitiya is located in the Puttlam district. Kalpitiya consists of 14 islands and is known for its serene beauty. The people of Kalpitiya are mostly fishermen. It has a total area of 16.73 km. It is now developing as an attractive tourist destination and a hot spot for kite surfing, whale, and dolphin watching.

Kalpitiya is a marine sanctuary with a diversity of habitats ranging from bar reefs, flat coastal plains, saltpans, mangrove swamps, salt marshes, and vast dune beaches. It provides a nursing ground for many species of fish and crustaceans.
The sea off the Kalpitiya peninsula became famous relatively recently in 2005 when large pods of spinner dolphins were spotted. These dolphins were mainly found in an area that ran north-south parallel to the Kalpitiya peninsula, inshore off the reef, which is commonly known as the dolphin line. The coastal waters are home to spinner dolphins, bottlenose dolphins, Risso dolphins, humpback dolphins, whales, and sea turtles. The best time for dolphin watching in Kalpitiya is from November to March/April.