Tetrapods to prevent sea erosion in Chellanam Tetrapods are made of concrete and they are designed in a tetrahedral shape to dissipate force of incoming waves Share Via Email | A+A A- Rojan Joseph, who is differently-abled, and his wife, natives of Ganapathikadavu near Chellanam, clearing the water from their house | File pic By Express News Service KOCHI: The state government will complete the repair work of geo tube bags in Chellanam coastal area and sea walls before June. The Rs 45 lakh work will also include cleaning of Vijayan canal and Upputhodu, to ensure maximum water flow. At a meeting presided over by Chief Minister Pinarayi Vijayan and attended by Minister for Industries P Rajeeve, officers of fisheries, irrigation and agriculture departments on Tuesday decided to allot Rs 2 crore for Ernakulam district to fight sea erosion. The other seven coastal districts will get Rs 1 crore each.