the floating mountains are another ripoff of artist Roger Dean.
The Fearmakers Blog
https://thefearmakers.blogspot.com/

Just watched it (for probably the 5th time) and thought about the floating mountains but my question was where the water for the waterfalls comes from.

For some nutty reason I like the Pandora floating mountains. Why? Because they look cool.
Laugh while you can, Monkey Boy!

Not that much lower. According to external sources, 20% less that of Earth. Mars' for instance is 60% less and the Moon's is 85%.

Obviously you weren't pain attention. Pandora's gravity is much lower than Earth's.
Why weren't any of the characters floating around?

Thanks.
Well, the more limbs you have the better, I figure. We only have four limbs because we are limited by gravity. But consider a world with a much weaker gravitational pull and that's a whole different story.
Some people's stupidity really does amaze me.

Well you got me there. Well done!
I still don't see the usefulness of having 6 limbs for a large terrestrial animal.

Thou shalt keep thy religion to thyself. - George Carlin

Ok, then we are now in the realm of fiction in the world we know, there are no animals weighing more than a few pounds that have more than 4 limbs.
Well, what do you know, yet again you are wrong. The colossal squid (Mesonychoteuthis hamiltoni) can weight up to 1600 pounds. And it has 10 limbs.
Some people's stupidity really does amaze me.

Ok, then we are now in the realm of fiction in the world we know, there are no animals weighing more than a few pounds that have more than 4 limbs.
I just don't see what usefulness these two extra limbs would have they would be a hindrance more than anything else.
In the end, it's just a movie anyway along with the glowing blue plants, I guess it makes it all look more alien.

Thou shalt keep thy religion to thyself. - George Carlin

Obviously you weren't pain attention. Pandora's gravity is much lower than Earth's. According to published material, a sixth to be more precise. That's why there can be huge six legged animals there, huge gigantic trees and also floating mountains. In this case there's also the mag-lev effect involved.
Some people's stupidity really does amaze me.

Have you ever seen something with 6 legs that weighs more than a few pound like in the movie?
Waiting for your answer.

Thou shalt keep thy religion to thyself. - George Carlin Mr. Smarty Pants

Crustaceans. Next question?
Some people's stupidity really does amaze me.

Apart from insects (which weight is measured in grams) name one.
Some people's stupidity really does amaze me
indeed.

Thou shalt keep thy religion to thyself. - George Carlin

Haven't you ever seen a 6 legged animal before? Which planet do you live? Because on my world, we have those in every single region of it. Even on ice.
Some people's stupidity really does amaze me.

If Donald Trump can be the Republican Party nominee for the U.S. President, then Pandora can have all of the floating mountains they want.

Good thing those roots and vines held them. Floating island is a dessert I never made although it looks good on cooking shows, but Floating mountains might just tempt me since it would probably use chocolate and coffee to give it a soily, minerally appearance.

That's what I thought
No retort
I'm a Gunslinger. I deal in hard calibers.

whoa, take it easy there "Punchy"
No one cares
just calm down
tell your mommy it's time for your xanax.
I joined the Navy to see the world, only to discover the world is 2/3 water!

You do realize that the OFFICIAL picture of the OFFICIAL book that you OFFICIALY posted proves my point and not yours
It states that "their mutual repultion finally pushed a large chunk on unobtainium containing matter away to hang in the air"
not to mention the OFFICAL james cameron has OFFICIALY stated that Well the floating mountains. A physicist friend of mine calculated that for a pure superconducting mountain,
to break it off and float
it would require a magnetic field so strong that it would rip the hemoglobin out of your blood
http://www.ecorazzi.com/2010/02/09/james-cameron-reveals-how-pandoras-floating-mountains-would-kill-you/
So you can OFFICIALY go F yourself
I'm a Gunslinger. I deal in hard calibers.

And now the insults start when you got busted trying to boost your bs as "official" when it wasn't.
Fark off
I joined the Navy to see the world, only to discover the world is 2/3 water!

whoa, take it easy there "Punchy"
No one cares
just calm down
tell your mommy it's time for your xanax.
I'm a Gunslinger. I deal in hard calibers.

That isnt official crap.
Its a fan maintained site where anyone can contribute.
The article you're quoting was written by some other guy just like yourself off the internet. Maybe even YOU, yourself.
The only thing "officially" about your link is that it is officially a fan site.
My information comes from ACTUAL Officially licensed material.
The official publication,
Avatar: An Activist's survival guide
.
My information was not quite right but close, I was going from several years old memory. The difference is rather than erosion, it was formed when Pandora was still molten and cooled with the unobtanium trapped in the magnetic fields.
But here ya go straight from an OFFICIAL source
Not your Officially a fan made source. LOL
https://flic.kr/p/MPaCp6
https://flic.kr/p/NDpcfv
I joined the Navy to see the world, only to discover the world is 2/3 water!

I copied and pasted my post straight from the official wiki
http://james-camerons-avatar.wikia.com/wiki/Avatar_Wiki
I'm a Gunslinger. I deal in hard calibers.

The ground level was much higher there in the ancient past. Over eons of time the ground was eroded away exceot for the Unobtanium deposits, leaving them floating in midair as the rest of the ground around them eroded away.
That's at odds with what sommdude posted above:
On Pandora, the magnetic effect causes huge outcroppings of unobtanium to rip loose from the surface and float in magnetic vortices.
Your explanation has the ground leaving the unobtanium, his explanation has the unobtanium leaving the ground. Which is right?