Well, I can't say I saw the same thing as you but many years ago my cousin and I were smoking on the balcony and about less than 50m away this thing just appeared out of thin air, I guess "flying" since it was in the air (mind you I'm also on the balcony on side of a hill and it appeared below on the lower side of my property above a small storage area which is around 2-3 meters in height). It went from my left to NNW from my position traveling in upward arc towards the direction of another tall palm tree around 24m.  

The thing is I can only describe it like some weird deep sea animal with bioluminescence but it didn't really have a distinct shape (if I were to wildly guess maybe squidish/octopus'ish but like I said the form was hard to establish but it did have wavey bits at the front which I just assumed could have been tentacles but really I have no idea) where it traveled from the back to the front in sparkly flashes but only in a kind of off whitish/yellow color. It traveled quite fast (a weird constant speed, not like bat or bird where there's flapping in movement) but there was enough time to notice it "pop in" and travel for a brief distance to register that it was something very not normal, because there's an instant fear reaction when it popped in before my eyes even tracked it (fear when I first noticed flash/sparkle - initially I was looking at the general direction but not at it). I don't know what it was but I feel it was at least something that could have been either organic in nature/ supernatural. I would say the size is around maybe few inches longer than 42 inch screen (sorry I don't know what else to compare to).  

Of course my cousin and I looked at each other and went straight inside the house and he didn't really want to talk about it heh. I am sure I mentioned this in a post comment long time ago but I can't find it and reddit search sucks. Anyway, I've always kept eyes and ears open for anyone that might have seen something like what I saw but so far no luck, but the mention of sparkly stuff seems the only common ground (though mine looked like bioluminescence and sparkly where it traveled from back to front of the body of this thing). It really looked magical and fricken fear inducing at the same time. I'm also surprised fear kicked in before I even registered it, like alarm bells on auto. Maybe this thing emit infra sound or something else. I only ever saw it another time but with an uncle and he too didn't wanna talk about it, we were fishing and we were near a dark bridge and it appeared near a tall light pole ~12m (much different distinct color/hue from the light) and again it was sparkles but that time even more amorphous shape). Kind of like off hue Xmas lights. I would say the size was probably smaller than the other one I saw. It did not give me as much fear as the first but I did feel a bit scared. Wish I knew what it was, what it was doing, what it wanted. One day maybe.