Bali Police headquarters has tightened security along the island's waters and coasts as an anticipatory measure to prevent disturbances ahead of Christmas and New Year.
Sr. Com. Tubuh Musyaref, head of Bali Water Police, told journalists in Denpasar over the weekend that there were 67 alternative routes to enter Bali from its seas.
"These alternative entries will be tightly guarded as they have been used as easy, soft entry points to the island," Musyaref said.
In addition to the ports in Gilimanuk and Padangbai, as well as Benoa and Celukan Bawang, the official entrances, Bali has numerous traditional fishing ports.
"Traditional fishing ports in Jembrana, Klungkung and Buleleng are the most vulnerable spots that require extra security guards. These places overlook Java, Kalimantan and Madura directly," he said.
In Klungkung, the Bali Water Police has established a community-based security system involving pecalang laut, traditional security personnel guarding the sea, and local fishermen to secure their areas.
"The water police will deploy dozens of personnel to accompany the community-based security team in Nusa Penida and neighbouring locations," he said.
Nusa Penida islet has become a favoured tourist destination for international and domestic tourists who love water sports.
Meanwhile the neighbouring Nusa Lembongan islet has become a transit point, which is very open and insufficiently guarded.