Paradise in Perth has a name, and it is William Bay National Park. With its stunning turquoise waters, sandy beaches and granite structures, it will be hard to spend just one day here. Pack your gear for some swimming and snorkeling, or if you prefer land-based adventures, explore the granite formations and search for wildflowers, especially orchids. You can observe the shorebirds by the beach, or take a dip in the waters for some quality time with whales, dolphins, and all sorts of exotic fish.