Superbugs thought to have spread from animals have smashed through the last line in antibiotic defences and pose a global threat, scientists say.

Big waves pounded Bermuda's beaches today as islanders rushed to board up windows, fill sandbags and stock up on water, food and other supplies before Hurricane Igor's expected arrival.

Four Chinese Muslims who arrived in Bermuda after being freed from Guantanamo have remained in their seaside cottage, wary of the political firestorm their presence has caused.