The Krian District boasts the largest mangrove swamp area in the State of Perak. It undoubtedly, have a variety of birds and animals that rely on the the swampy surroundings as a breding ground and a survival sanctuary. The Burung Kuang, is one known species of bird that makes its nest on the lower branches of the mangrove plants.

Pulau Kalumpang, an island located in the area, is reputed to have the most picturesque mangrove swamp in the world. Therefore, a visit to the area is a must for those who wish to have a closer look at nature and her wonders.