Kokkilai lagoon (Tamil: ) is an estuarine lagoon in Mullaitivu District and Trincomalee District north-east Sri Lanka. The town of Kokkilai is located on a sand bar between the lagoon and the Indian Ocean.The lagoon is fed by a number of small rivers including Churiyan Aru. It is linked to the sea by a narrow channel that is very often blocked by the sand bar. The lagoon's water is brackish. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
The answer to this question is:
Natural Place