It determines seeing if the player has his/her head under or above water.
Not really tired. If someone asks you to lift a pencil, you actually can lift it. If someone asks you to lift a car, it would be harder for you than lifting a pencil. That doesn't mean that you would be tired of lifting it, you simply can't apply enough force to keep it lifted and/or starting lifting it.
I'm sorry if you got offended by the non-mention of
@Janny's thread, but by the time I posted this thread, I didn't have any knowledge about his idea on team moves.
Yes, it was. Just trying to keep it close to the show.
I do realize how Airbending is buffed in water terms. Currently, an Airbender has more mobility on water then Waterbenders.
Remember that the Airbender is controlling the air in the bubble, not the water. Why is it harder to create a bubble with a straw in a banana milkshake than in a water glass? Because the milkshake is denser, and so, it is harder to push the water back.
How does it invalid my point?
My thesis is based on the following assumptions:
If Waterbenders are able to waterbend, they are capable of creating bubbles in the water.
The Waterbenders are able to waterbend.
Therefore, the Waterbenders are capable of creating bubbles in the water.
If Waterbenders create bubbles by pushing water out, if you can not push the water out, it is not possible to create a bubble.
The Waterbenders create bubbles by pushing the water out.
So, if you can not push water out, you can not create a bubble.
If you can not push water out, it is because a force is opposed to Waterbender.
You can not push water out.
Thus, a force opposes Waterbender.
If water has density, the more water there is in a square meter the denser becomes that area.
Water has density.
Therefore, the more water there is in a square meter the denser becomes that area.
If in the bottom of the ocean the amount of water is larger in square meter, the density is higher.
On the ocean floor the amount of water is greater in a square meter.
Therefore the density is higher.
The more dense an area, the more difficult the movement.
If it's necessary movement to push water out, the more difficult it turns to the Waterbender create a bubble in high densities.
It is necessary movement to push water out.
Therefore, the more difficult it turns to the Waterbender create a bubble in high densities.