The Underwater of Chumphon Festival is held on Thung Wua Laen Beach, Sa Phlee, Pathiew, Chumphorn. To maintain the marine environment sustainably, the activities on this festival include letting newly bred aquatic animals into the sea, diving to clean the sea, treasure hunting games and tourism entrepreneur fairs. This festival is held in April every.
- Open days
Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday