Most things to do in Mandurah involve the water. The Peel-Harvey estuary is the largest in southwestern Australia and supports a resident population of bottlenose dolphins; boat tours and small canal cruises run from the marina year-round. Crabbing for blue manna crabs is a local obsession in summer. Beyond the water, the city has a small but growing public-art collection along the foreshore and a couple of good walking and cycling trails through native bush.