Rottnest

Two years ago, a sport fisherman caught a pair of rare sharks off Rottnest Island in Western Australia. The duo, a male shark about 3.3 feet (1 meter) long and a pregnant female about 3.9 feet (1.2 m) long, looked different from the sharks that normally prowl the Australian waters. The female was carrying 22 pups.

The fishermen gave the sharks to ocean researchers at the University of Western Australia. After analyzing the sharks' DNA, the team concluded that the sharks were mandarin dogfish sharks, which are normally spotted only in the waters off Indonesia, Japan and New Zealand.