Floating Slab or Raft Foundation. A slab foundation is a large concrete floor covering the entire building area through which all the loads from the building are transmitted to the soil. It is both building floor and foundation and is well suited to garages, shops, small stores, and homes without basements.
There is no real place in Australia called Mako Island. It is not a real place as in a named, populated spot on the planet. It has been animated and all the underwater scenes are filmed at Sea World on the Gold Coast. Mako Island is a fictitious place made specifically for the TV shows.
There are at least 4 cities called 'Kokomo', from Mississippi to Hawaii. There used to be a private island ( now called 'Sandals Cay' ? ) in Montego Bay. The Beach Boys have a song, Kokomo, which is a little vague on geography, but also adds the Florida Keys into the mix. Bruce Springsteen, in  4th of July, Asbury Park ( Sandy)  talks clearly about  ... parked with lover boy; Out on the Kokomo....