If you’re in the Wollongong area I’d suggest checking out Austinmer Beach, in particular the rock pools on the left hand side. They're well known for being some of the best rock pools in the Illawarra with lots of anemones and little fish about. Easy to get to and lots of rock pools that are not right next to the waters edge so good spot to check out with kids. Also nearby is Austi Beach Cafe which sells awesome gelato. It’s also just generally a lovely and un-crowded beach with parking nearby, some trees, plenty of tables and is a nice drive from Wollongong.