For nearly 20 years, a group of bull sharks lived in an artificial pond on an Australian golf course after having been stranded by receding floodwaters. Then, they vanished.
A new paper published Aug. 18 in the journal Marine and Fishery Sciences chronicles the history of this unique population.
Bull sharks (Carcharhinus leucas) are unusual in that they can live in freshwater environments and are found in rivers around the world. Although their freshwater sojourns are typically temporary, bull sharks have occasionally been trapped in freshwater environments for long periods — and apparently thrived.
The golf course sharks were likely washed inland during periods of flooding. The Carbrook Golf Club, southeast…
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