Jellyfish in Pattaya, like other marine residents, can be often met in the sea water. However, their number near the coastline may sharply increase in certain months (from July to November). Even if these jellyfish are not very dangerous, swimming with them is not pleasant.
However, there are periods when some dangerous species of jellyfish come to the shore. For example, box jellyfish can be met in Pattaya. The bite of this jellyfish causes burning pain, spasms, nausea, heart palpitations. If this species is found at beaches, the administration will rise warning flags immediately.
The most poisonous jellyfish is the "Sea wasp", which can kill a person with its poison. It is almost imperceptible jellyfish with a translucent dome and long tentacles, which length can reach up to 3 meters. These tentacles contain poison that in 4 minutes can cause lung paralysis and stop breathing. If such a jellyfish is shown in the coastal waters, the beach will be immediately closed. Only antidote can save from the poison of the "sea wasp".
If you feel unpleasant contact during the swimming in the sea, try not to lose your self-control. You should not wave your arms and legs hard, so as not to get tangled in the tentacles even more. The closer your contact with the jellyfish, the more poison you will receive. In the worst case, you can lose consciousness right in the water. As soon as you feel a burning sensation on the skin, you should immediately go ashore and get first aid. You should try to remove the remains of tentacles from the affected skin with the help of cotton buds or tweezers, avoiding to touch the wound with your hands. It is necessary to treat the wound with lemon juice or vinegar. The poison of the jellyfish contains a toxin, so you should not wash the wound with drinking water, soda or urine. Do not bandage and scrub the burnt area. You should ask for help from a rescue or medical service. The doctor will make a special injection which neutralizes the action of the poison. In Pattaya, as in all of Thailand, the impact of various jellyfish on the human body has been studied carefully for many years. Almost all city beaches have medical services, which are absolutely free. In all public places (large shops, hotels and beaches) tourists are given information leaflets which tell about the danger of jellyfish and the first aid. If this leaflet falls into your hands, you should study it and advise your family and friends to read it too.