In Arkansas as long as you are able enough to drive it you can drive it w/o a license
Mask, fins, snorkel, SCUBA tanks, Buoyancy Control Device and weights. It's also nice to have a wetsuit and dive computer. Also, see the answer in the question "What is the required equipment for...
Yes, the most common license is a PADI license (Professional Association of Diving Instructors)
If you have a diver's license, you probably don't live in Nevada.
hey zeynep! I'm gonna miss you budz! ain't this so cool! so wacha doin? im awesome, i no :D