There are lots of challenges! You must always be careful and watch your oxygen level and nitrogen levels. There is always a chance of getting lost and not being able to find the boat again (even with your buddy), but if you have a diving buddy who is good about that they can teach you. Another thing is the thermoclines, sometimes you will wear a shorty and expect it to e perfect temperature and bam, its either too cod or too hot. There's also dangerous sea creatures, but as long as you can identify and avoid them you should be fine. Also sometimes the pressure can be a bit annoying but there are ways to equalize so u should be good. Good outways all the challenges though, in the end it's worth it!
The Ammeter is used to detect and measure current or amperage. Also a more common tool now used is a multimeter that detects and measures voltage, current, and resistance.
