Expect a solid, modern aquarium with the usual mix of big tanks, tunnel walks, and themed zones. You'll see stingrays, sharks, penguins, and a few crocs along with the standard educational displays. It's clean, well-lit, and easy to walk through in 90 minutes to two hours. The underwater tunnel and penguin area tend to be the highlights; some sections feel a bit dated or overly commercial with gift shops at every turn. It's popular with families, so it can get noisy and crowded on weekends and school holidays.
Best time to visit is weekdays during shoulder seasons (March-May or September-November) when crowds are thinner. Summer is busy but the weather outside is better for combining with other activities. Expect to pay around $50-65 for a standard adult ticket; add $30-50 more if you want a behind-the-scenes tour or shark dive experience. Kids are cheaper, and combination tickets with other attractions can sometimes save a few dollars.
Honest tip: Get the basic ticket and head straight for the tunnel and penguin exhibit first thing - that's the stuff worth seeing. Skip the paid animal encounters unless you're a diver or have kids who really want them; they're overpriced for what you get. If you're short on time or on a tight budget, the aquarium is fine but not a must-do compared to Melbourne's free museums and parks.
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