The Busselton jetty is the longest wooden jetty in the southern hemisphere. It was built in 1865 to support the all important timber trade. There were a few extensions, the last being in 1960 bringing it to almost 2km in length! At the end, there is an amazing underwater observatory with great sea life. The fish and coral are all there on their own accord, there is nothing done by man to attract them. The colors were simply amazing!