In order to visit the best beach in Jaffna peninsula you have to reach about 20 km off from Jaffna. It is in karainagar. Travelers can free roam and walk a long way to the deep blue water. The beach gets this name as the Casuarina trees along the beach. Hence the beach is high light for the Sri lankan tourism. Obviously the beach is clean and well maintained by the authorities.
Perhaps an entering fee will be charged in order to maintain the beach. Recently Jaffna was captured by the terrorists during the lasted 30 year war. Therefore tourists procrastinate Jaffna in their tours to Sri lanka. Henceforward Jaffna is open to all.