It depends on the altitude of your swimming pool. The ambient pressure will be relatively close at only 12 ft. no mater the altitude. If you were to ask whether it would hurt more at 30 ft. in a pool or in Lake Superior, then the altitude will be more of a factor. Lake Superior is appx 600 ft. above sea level, therefore, the baraometric pressure will be different than a pool at 15,000 feet above sea-level. In this senario, your ears would hurt more at 30 ft in Lake Superior than in a swimming pool at 30 feet. This is of course all assuming that by using the term "Ears Hurt" you mean where would they have more pressure, because as your ears equalize, they shuld feel the same at 12 feet underwater as 100 feet. tritonunderwater.com
Swimming costume.
I am going to go swimming today.
proper swimming costume- not lycra or anything swimming cap swimming goggles
Clevealand or Detroit
Schwimmen = to swim. Ich gehe schwimmen = I am going swimming.
*
going
momentum and swimming are related because you need momentum to keep you going
He was going to build a swimming pool for his family.
Nadamos
oh god ya
Probably. There are twelve books.