MONSTERQUEST: Killer Jellyfish

History Channel -- Original Air Date: 5/28/09

Of course, we all know that there are deadly jellyfish in various oceans around the world, but MQ is looking for ones the size of small cars that travel in packs called "blooms."  Are they taking over the seas?  Witnesses give scary stories about box jellyfish and other breeds.  Could pollution and ocean (global) warming be causing increases in jellyfish populations?  MQ sends diver teams to look for these deadly creatures in both darkness and daylight.  Some research suggests that box jellyfish may have some form of intelligence -- which would make them even more dangerous; they swim about as fast as people.  One of the MQ divers gets caught in jellyfish tentacles, but his gear protects him, and it wasn't a box jelly anyway.  The team sees some great sea life and they find some big jellies, but nothign like the monsters they're looking for.  Guess the jellies are not taking over the seas after all.