10-ton fishing boat sunk by giant jellyfish.

JenK sent this one in. We're doooooomed!! From TreeHugger.com:

You could say it was the jellyfish, or you could say it was the overzealous fishermen on board. While trying to haul in a catch of several dozen giant Nomura's jellyfish - one of the largest in the world - a Japanese fishing trawler tipped right over.

According to the Telegraph, "The crew of the fishing boat was thrown into the sea when the vessel capsized, but the three men were rescued by another trawler, according to the Mainichi newspaper. The local Coast Guard office reported that the weather was clear and the sea was calm at the time of the accident."

It's no wonder only a few dozen could capsize a boat. Each jellyfish can weigh as much as 450 pounds. This year has seen a big spike in the numbers of these giant jellies, with a similar population boom not occurring since 2005, when the large numbers of jellyfish and their stinging tentacles ruined fishing nets and made catches of fish inedible. Both ideal weather conditions and a smaller number of predators, such as sea turtles and certain fish species have helped the jelly populations grow this year.