The Busselton Jetty is also described as a fantastic dive site.
The staff in the souvenir shop/ticket office on the pier can give you more detail about what activites you can do there.
There's also a wreck, the Swan, which can be dived.
We were also told that whale watching is an excellent activity to do in Busselton, with a very high sighting success rate. (Need to checkr which months of the year this activity is possible)
Here's a view looking down into the clear blue water under the jetty.
The marina is fairly new and offers floating marina berths for long term lease. There is a boat lifter and hardstand service area. They also offer charter services for sailing, diving, fishing, dolphin and whale watching.
There is an onsite manager 7 days. Service Area
Bay Dive is based in Dunsborough but you will quite often see their boats just off the Busselton Jetty. They specialise in dives to the Swan Wreck which is located in Geographe Bay. This ship wreck is reported to be one of the World’s best Wreck Dives. The ship was purposely sunk in 1997 and lies upright in 35 metres of water. The ship is 113 metres long and over 30 metres wide. The dive runs daily (depending on weather conditions). Day and Night dive options are available.