A huge bloom of jellyfish first invaded Sattahip Naval Base, then made its way up to Jomtien and Pattaya beaches.

Urasin Khantaraphan and Patcharapol Panrak
More than a million jellyfish have invaded eastern waters, making a day at the beach a potentially painful experience.
The annual bloom of juvenile jellies is dangerous, but not usually deadly. They are enough, however, to push beachgoers out of the surf.
The bloom, which usually comes in late September to early October, was first spotted at the Sattahip Naval Base Sept. 23.
Officers and conscripts lined the Laem Tien and Juksamet piers, snapping pictures on mobile phones of the thousands of young jellies, whose translucent bodies reflected pastel colors from the sun.
Pier commander Rear Adm. Chatchai Phothipak said the jellyfish didn’t muck up the engines or works of the ships, so they simply provided a natural distraction.
The area is not open to the public, but navy officials planned to share photos online for public enjoyment.
Sunbathers in Pattaya won’t need them. They received a first-hand dose of the colorful creatures Sept. 24.
The swarm of jellyfish had shrunk once it arrived off Jomtien and Pattaya beaches, but they were still plenty potent. Many avoided the water and scuba divers certainly lamented the spawn, but a few brave - or foolish - souls scooped some up in buckets.
Stings can be painful or, for people with allergies, potentially deadly. The usual treatment for normal stings is to treat the welt with water as hot as the victim can tolerate and then splash with vinegar.
British tourist Bruce Fleestone, 60, said he didn’t want to swim because he saw lots of jellyfish in the water and he was afraid of getting stung. He said he warned other tourists to do the same.
Beach vendor Jintana Kantawhichit, 56, said the jellyfish often surface when it rains, but disappear when the sun is blazing. The majority of them can be found 20-30 meters off shore.