21.07.07 In Phan Thiet City from August 1 to 4, visitors have an opportunity to observe a traditional festival for fishermen called 'Cau Ngu'. Cau Ngu is a local festival, and involves worship of Ong Nam Hai, or the Whale, which is believed to help fishermen. During Cau Ngu, fishermen pray for calm seas, an abundant catch of fish, and peace for all. The celebrations consist of both religious customs and activities for entertainment. 