You can do that here too. Dolphin Discovery Centre holds daily swim tours throughout summer.
http://dolphins.mysouthwest.com.au/
You gotta watch those radar traps on long weekends they often have 3 of them set up for those idiots that think because they have passed one they wont see another so they speed up....then number 2 gets 'em only a few kms down the road....and for the total morons that speed up again there is number 3 only a few more kms away....on a long weekend with double demerits thats ur licence gone yoink have a nice day.