The UK's Telegraph is reporting a deadly species of jellyfish is responsible for halting production of Warner Bros. Pictures' Fool's Gold, starring Matthew McConaughey and Kate Hudson, who were originally due to be filmed swimming in the sea. Dr. Jamie Seymour, from James Cook University, said she had found five of the animals off Queensland's Fraser Island.

The Irukandji jellyfish are translucent and the size of a thumbnail; they're spreading along Australia's coastline as a result of global warming. Among the world's most toxic creatures, they're all but impossible to detect in the water but packing a potentially lethal punch belying their tiny size.

If they migrate south in sufficient numbers, irukandji would threaten the safety of swimmers, surfers and snorkellers along southern Queensland's Gold Coast and Sunshine Coast holiday destinations.

Fool's Gold was released February 8th, 2008 and stars Matthew McConaughey, Kate Hudson, Donald Sutherland, Alexis Dziena, Ewen Bremner, Ray Winstone, Kevin Hart, Malcolm-Jamal Warner. The film is directed by Andy Tennant.