Rottnest Island Pedal and Flipper. You can rent one of this outfit's 1,300 bikes—the island's must-have item—from A$30 per day, with a returnable deposit of A$50 per bike. Tandem bikes and attachable buggies for little children can also be rented. Also for rent: snorkel sets, paddleboards, surfboards, bodyboards, wet suits, and beach cricket and soccer essentials. It's open daily 8:30–5:30, though hours vary according to the season (when there's no 6 pm ferry, it closes at 4 pm). Expect queues at ferry arrival times. Thomson Bay, Rottnest Island, Western Australia, 6161. 08/9292–5105; www.rottnestisland.com.