Busselton Jetty and Underwater Observatory. At almost 2-km (1¼-miles) long, the 146-year-old Busselton Jetty is the longest timber jetty in the southern hemisphere. You can visit the Interpretive Center and Heritage Museum at the start of the jetty, then either catch the miniature train (45-minute ride) or walk to the fascinating Underwater Observatory—one of only seven in the world—where you'll spy all manner of soft, colorful coral as you descend the cylindrical, windowed observatory. Tours for up to 40 people run every hour, taking you 8 meters (26 feet) below the water. The warm Leeuwin Current and the sheltering effect of the jetty above have created a unique microclimate rich with colorful tropical and subtropical corals, sponges, fish, and invertebrates—there are 300 marine species in all. Booking is essential. Beachfront, Queen St., Busselton, WA, 6280. 08/9754–0900. www.busseltonjetty.com.au. 1-hr Underwater Observatory Tour, return train ride and jetty day pass A$29.5; jetty only A$2.50; one-way train only A$11, Interpretive Centre & Heritage Museum free. Interpretive Center & Heritage Museum, May–Aug., daily 9–5; Sept.–Apr., daily 8.30–6. Underwater Observatory & Jetty Train Tour, May–Aug., on the hour 10–3; Sep.–Apr., on the hour 9–4.
Cape Dive. This company has dive tours to the wreck of the HMAS Swan, a Royal Australian Navy River Class Destroyer Escort deliberately sunk in 30 meters of water off Dunsborough to become an artificial reef and dive wreck. Dives are tailored to novices and experienced divers alike. They also offer dives around the Busselton Jetty, where an abundance of corals and marine life have made their homes on the pylons. Cape Dive has recently added seasonal whale watching to its suite of experiences. shop 1, 222 Naturaliste Terr., Dunsborough, WA, 6281. 08/9756–8778. www.capedive.com. Tues.–Sun. 9–5 (reduced hours in colder months).
Cellar d'Or Winery Tours. Cellar d'Or Winery Tours has daily tours of Margaret River region wineries from A$82 per person. The tours include pick-up at your accommodation, wine tastings at five boutique wineries, platter lunch and beer tasting at a micro brewery, chocolate sampling, cheese and local produce tasting, and complimentary bottled water and wine glass. 0428/179729. www.cellardortours.com.au.
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