I am considering going scuba diving, which I know is where you can dive underwater and explore gorgeous marine life and still be able to breathe by using a breathing apparatus, but it scares me. Have you been?
I have never been fully scuba diving but I have been snorkeling  in the Bahamas. I would love to go scuba diving though
I know scuba divers often use breathing gas, which lets them more freedom than surface divers, as well as longer endurance. So, I can just imagine how much more you can see under there!
I think it would be amazing to look at all the creatures we can't see from up here. I would also be concerned about using the air tank but I think if you practiced it would be ok. 
Yes, I know certain scuba setups sends the exhaled gas into the environment. But, I think they often have more than one cylinder so that would be reassuring too, knowing you don't have to worry about not having ample oxygen!
Exactly! At the same time having more would weigh you down.  I guess the professionals know what they are doing and would set you up correctly. I would want to dive with a professional for sure. 
Me too, for sure! I think I'd want a rebreather too, since I know they allow more time underwater, less bubbles and noise. Those are some major benefits when doing some serious scuba diving!