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.
Well, there used to be a place called Kokomo Island in the Caribbean, but it was actually named that by the Sandals/Royal Caribbean resort/cruise line company. And they named it after the song. We told you this song could warp reality! Today the former Kokomo Island goes by the name of Sandals Cay, anyway.