Two large male crocodiles watch a crowd gathered for feeding time at Darwin's Crocodile Farm.
Two large male crocodiles watch a crowd gathered for feeding time at Darwin's Crocodile Farm located 100 kilometres (60 miles) south of Darwin May 10, 2005. A record number of crocodiles in Australia's famous Kakadu National Park, and larger more aggressive saltwater crocodiles, have put rangers on high alert as the giant animals attack boats and bite outboard motors. Crocodiles have been a protected species in the Northern Territory since 1971 and their number has now grown to around 70,000 saltwater crocodiles, up from 3,000 some 30 years ago. There have been only two recorded fatal crocodile attacks in Kakadu, 250 km (155 miles) east of the tropical city of Darwin when in 2002 a German tourist was killed while swimming in a waterhole. The other fatal attack was in 1987. But in March this year a 56-year-old fisherman was attacked when a four-meter (13 foot) crocodile jumped onto his boat and bit him on the head, park rangers said.