You will need: a good torch or spotlight - the stronger the better.

Now kids, this activity is one to do with your parents. The whole family can be involved and its lots of fun. All you need is a good torch - more than one if there's a group of you. Travel out to Simpsons Gap at night and park right down in the last car park next to the Gap. Its kinda easier if you visit the place in the daytime first so that you can find your way around easily.
At this stage, you have two options. You can walk to Simpsons Gap along the sandy floor of the dry river or you can take the gravel path. The sandy creekline is more fun, so that's what l recommend - it's good exercise as well!
You'll find yourself down near the waterhole in about 10 minutes or so. Find a comfy spot on the sand and start looking around in the sky above you. Chances are there will be the occasional small bat zooming past. If you are really lucky and if you are really good at keeping the bat in your torchlight you'll see the bats swoop down and skim across the surface of the waterhole.
Now this looks like great fun but that's not why they do it. What they are really doing it having a drink! Believe it or not! They carefully move their lower jaw down into the water and water shots into their mouth - all while flying rather fast! Its a safe, convenient way of having a quick drink. If they landed on the edge of the water and had a drink like that, perhaps a snake would come along and eat them.
These small bats don't always get it right. Sometimes they aren't careful enough and swim straight into the water. Do you think they can swim? Well, you may not believe it but they are great swimmers! Brilliant swimmers! They do a quick butterfly type stroke and get to the edge of the waterhole in seconds. No need to dry out either because they don't have feathers or fur on their wings - just smooth skin that the water runs straight off. They launch into the air and away they fly (possibly learning a lesson not to be so careless next time).

Enjoy the spotlighting! Ranger Michael