The Great Blue Hole, thousands of years old. They are underwater sinkholes also called Vertical Caves. There are many different blue holes located around the world, but the best known is 'The Great Blue Hole" of BELIZE.
"Flying fox" Pteropus are the largest bats in the world. Fruit Bats or Flying Foxes. Australia looks like a very interesting place to visit; so many odd things are down there.>>>>>>>>Talk about a mega-bat!