Bubble cave

These drawings were made to help the guys calculate the depth and the air molecules. As you can see by Henry's drawing, you can fit three heads in there. Notice the fins.


-What you guys doing?
-We're in a very serious discussion. We're trying to figure out where the air comes from.
-Oh. In the cave?
-Yes. One theory is that it comes from the divers.
-Huh?
-So what we're trying to determine now, is how long we can stay in there before we run out of air.
-And. If it would be possible to have a smoke in there.
-Haha!
-So. I say we can fit about three heads in there. But for how long?
-And where does the air come from? There is no light in there either.
-Ok. May I keep this drawing?
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Chris said: I believe the air comes from the water. Oxygen is present within the sea, and the sea is also great at absorbing CO2. So, over time it will take the bad air out, and put the good air in! Im soo smart!