Imagine you feel a mild current at the start of your dive. in midwater, you cannot see the surface or the bottom. You are most likely to become confused about which way is up or down _. If you and your buddy were separated underwater what would you generally do? Search for a minute underwater and then go up to find your buddy. You know you are properly weighted for diving if you: float at eye level holding a normal breath of air with an empty BCD. As you descend (go down) towards the bottom, you wet suit will: compress (become smaller in thickness) from water pressure and you will lose buoyancy and warmth the deeper you go. Sound How should you move under water? Slowly and steadily If you work too hard and find it difficult to breathe underwater, you should: stop all activity and rest, hold onto something for support, if possible. This is why you cannot use it to tell direction very well. bigger, nearer _ travels faster in water. When you look at things underwater they often seem_ than when you look at them on the surface. What can you do to properly care for a scuba tank? Do not use all the air in the tank.
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