Located a mere 200 meters away from the Ramanathaswamy Temple, Agnitheertham is a stretch of the sea which is rather shallow. Considered sacred by people most of whom come here to take a dip in its clear and clean water. The Ramanathaswamy Temple stands close by with its sanctum facing the east. The lake in the temple complex is said to be holy. There are twenty two wells dug here and amazingly the water from each well has a different taste as compared to the others.