Ewens Ponds Conservation Park

Diving in Port MacDonnell

Less well-known than nearby Piccaninnie Ponds, Ewens Ponds are a sequence of three interconnected, 9m-deep limestone sinkholes, also popular with swimmers, snorkellers and divers. The chilly water here is improbably clear – good for spotting rare endemic fish species, including the Golden Pygmy Perch (like your standard-issue goldfish, but with charisma).

Jump in at First Pond and go with the flow through to the Second and Third Pond (try not to stir up any silt). For tours and gear hire, contact Reef 2 Ridge in Mount Gambier.