Sunlight only reaches down to 650 feet below the surface of ocean. This "sunlit zone" is where all sea plants and most sea animals live. From 3,280 feet onward, is completely dark.
Free divers do but scuba divers do not need to. Scuba divers take their air with them and would have no need to hyperventilate.
Headlights need to be used at night, when it is dark, and when windshield wipers need to be used.
You need to periodically replace the headlights on your Chevy truck when the headlights start getting dim. You can purchase replacement headlights from retailers such as Parts Source.
they need protection from stuff
They need to know how to swim away from sharks and such!
To open your headlights on the XRG, You will need to download a mod.
Hell if ik..
The Ford focus can have LED will headlights. The LED headlights do not come standard on the vehicle and will need to be an aftermarket addition.
Your headlights need to be adjusted, you do this by popping your hood and adjusting them by the screws on the top or bottom of the headlight, most of the time you will need a screwdriver to do this.
Like all adults or older teenagers; scuba divers need English and Maths also physics and scuba diving training. Hope I answered your question xx
The switch is broken. You need to replace it.
they need to know how long they can be underwater, and how deep they can go with the air in the tank.