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Most diver injuries caused by aquatic animals happen because: The animal is protecting
itself from the diver.
You can prevent most surface emergencies (problems) by: Making yourself float (positively
buoyant) and reducing your physical effort.
What is the first thing you should do with an injured diver at the surface? Make the diver
float and check to see if the diver is breathing.
Imagine you accidentally get tangled in something. What should you do first? Stop, think
and slowly untangle yourself.
Bouyant emergency ascent (dropping your weight system) When buddy is too far away and
you are deeper then 9 meters/30 feet.
Controlled emergency swimming ascent (CESA) - swimming up to the surface making a
continues sound (like ah-h-h-h) When your buddy is too far away.
Normal ascent (going up normally) When you are low on air and not out of air.
Alternate air source ascent (using your buddy's alternate air source) When buddy is near.
After getting an unresponsive (unconscious or dazed) diver out of the water, you should keep
checking for ..... . Breathing.
You should take a local area orientation dive whenever you: Dive in new place