An azhy similar to an isthmus, is a sand sedimentation formed by the constant action of seawater where the backwaters merge into the sea. Two barges having large mechanized shutters are erected near the north and south end of the azhy. These shutters, operated by traction motors, help to regulate the flow of saline water entering into the neighboring paddy fields of Thuravoor, Pattanakkad, Ezhupunna, and Kuthiathode panchayats connected to thbackwaters]]. Water is released into the sea by lifting these shutters to prevent flooding in these paddy fields during excessive rains. A tall and majestic lighthouse near the azhy stands like a signal tower guiding the seamen during night. This lighthouse was open to the public during Onam, but is restricted now. This place is also one of the popular locations for Malayalam film shoots.