Nanthi Kadal is a lagoon

Lagoon

A lagoon is a body of shallow sea water or brackish water separated from the sea by some form of barrier. The EU's habitat directive defines lagoons as "expanses of shallow coastal salt water, of varying salinity or water volume, wholly or partially separated from the sea by sand banks or shingle,...

 in Mullaitivu District

Mullaitivu District

Mullaitivu district is one of the 25 administrative districts of Sri Lanka. The district is administered by a District Secretariat headed by a District Secretary appointed by the central government of Sri Lanka. The headquarters is located in Mullaitivu town...

, north-east Sri Lanka

Sri Lanka

Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka is a country off the southern coast of the Indian subcontinent. Known until 1972 as Ceylon , Sri Lanka is an island surrounded by the Indian Ocean, the Gulf of Mannar and the Palk Strait, and lies in the vicinity of India and the...

. The English

English language

English is a West Germanic language that arose in the Anglo-Saxon kingdoms of England and spread into what was to become south-east Scotland under the influence of the Anglian medieval kingdom of Northumbria...

 translation of Nanthi Kadal is "the sea

Sea

A sea generally refers to a large body of salt water, but the term is used in other contexts as well. Most commonly, it means a large expanse of saline water connected with an ocean, and is commonly used as a synonym for ocean...

 of conches

Conch

A conch is a common name which is applied to a number of different species of medium-sized to large sea snails or their shells, generally those which are large and have a high spire and a siphonal canal....

".

The lagoon is fed by a number of small rivers, including Per Aru

Per Aru

Per Aru is a river in Northern Province, Sri Lanka. The river rises in northern Vavuniya District, before flowing north/north-east through Vavuniya District and Mullaitivu District. The river empties into Nanthi Kadal lagoon.-References:...

.

The town of Mullaitivu

Mullaitivu

Mullaitivu is a small town on the north-eastern coast of Sri Lanka. It is the capital of Mullaitivu District in the Northern Province of Sri Lanka. A largely fishing settlement, the town in the early 20th century grew as an anchoring harbour of the small sailing vessels transporting goods between...

 is located on land sandwiched between Nanthi Kadal and the Indian Ocean

Indian Ocean

The Indian Ocean is the third largest of the world's oceanic divisions, covering approximately 20% of the water on the Earth's surface. It is bounded on the north by the Indian Subcontinent and Arabian Peninsula ; on the west by eastern Africa; on the east by Indochina, the Sunda Islands, and...

. As such Nanthi Kadal is sometimes referred to as Mullaitivu lagoon.

This is the place where the Srilankan Government claims to have killed the LTTE Chief Vellupillai Prabhakaran.