Translucent Flying 'Jellyfish' - Perth, Western Australia

Hi Lon,

This took place in Perth, Western Australia around 12 months ago now. I am only just reporting it after seeing similar reports coming in.

One night I was outside having a cigarette (quit now) and looking up at the sky, when something caught my eye as it flew over the stars and disrupted the light pattern slightly.

It was completely silent and it was just coincidence that I was there at the time to see it. At first I thought it might be some sort of plane as it was still, roughly, a few miles away at least. As it got closer, the way it moved resembled the way a jellyfish would swim if it was horizontal.

It was hard to describe, but it looked to be expanding at the front like a balloon, then using that air to propel itself along. It was roughly 100 meters above me and I watched it for 10 minutes. After that it was out of sight. This was during a clear night sky in Australia. I am very familiar with aircraft as I live relatively close to Jandakot airport and we see/hear them all the time. It was certainly not a machine of any kind. I yelled out to my Mother-in-Law who was staying at the time to come out and look. She also saw it. I filmed it on my smartphone, but being 8pm at night it was pitch black and you couldn't see anything.

If I had to guess, I would say the feeling I was left with is that it was some kind of creature. It moved gracefully and gradually in large deliberate movements. Like a large bird would do with a large flap of its wings, then gliding for a bit, although this was unlike anything I could describe. It appeared to be translucent in parts and remained at the same altitude and speed but just completely silent. - BD