A group of bull sharks lived in a golf course pond for 17 years. Scientists say they could be in other ponds in Australia

• A group of bull sharks lived in a freshwater golf course pond for over 17 years.
• Scientists say it's the longest we've ever seen sharks live in freshwater.
• They're unsure if the original sharks are still alive, since they haven't been spotted since 2015.

For almost two decades, a golf course in Australia boasted a unique selling point — a shark-infested pond near its fourteenth hole. 

Bull sharks in a pond is odd enough. Sharks in a golf course pond is odder still. But this group of bull sharks is the oddest yet.