From Colombo Page
Kuda Ravana and Maha Ravana seas in Sri Lanka's southern maritime territory have been proclaimed as Secured Zones due to the archaeological value of the area. Maritime archaeological researchers have found a number of places and objects of archaeological and historical value from this zone which can be accessed by boat from Kirinda. The decision to proclaim this area a security zone was taken at a discussion held in last July between the Archeological Department, Central Cultural Fund and Sri Lanka Navy.
Legend says King Ravana had build fortresses at these locations which are submerged in the sea now.