Here is a follow up on the killer jellyfish of Koh Phangan. Box jellyfish? Is there a coffin jellyfish? Probably. Seriously I do know they are extremely dangerous. Spoke to the boy about this...take care when swimming etc..he is IN Ko Phangan....Yea Yea Dad Cool it ...you can tell he has never encountered one...though he still bears the scars of a jellyfish encounter off Satun/Ko Krabaeng. Was not reassured.Phuket Gazette - online English newspaper for Phuket, Thailand, with daily news, classified ads, yellow pages, business listings, upcoming events, event calendar, phuket events