Do you ever wonder why foreigners drown in the sea in Thailand?
A red flag at a beach in Thailand indicates that the water is dangerous and swimming is not permitted. This is because the red flag indicates that there is a high risk of dangerous rip currents, which may be more frequent and stronger.
Yet even though this is published, look how many foreigners are in the water with no regard to their own personal safety.
Wise up, people.
Red means NOT SAFE for swimming!
Stay out of the water for your own safety!