What are two examples of hard coral ✔✔Elkhart and staghorn The ocean is an important source of life because: ✔✔It is home to man of the first links in the Earth's food chain The most common injuries occur when: ✔✔An animal is surprised by a diver's actions and instinctively protects itself Two examples of soft corals are: ✔✔Black and red coral Divers should avoid contact with all corals because: A. Contact can damage coral B. Contact can be harmful to the diver C. Contact can damage equipment D. all answers are correct ✔✔-all answers are correct Water comprises about _____% of the worlds surface ✔✔71% Examples of fresh water fish are? A. bass B. eel C. crayfish D. all answers are correct ✔✔All answers are correct If a diver is injured by harmful sea life, it is usually because of: A. Divers aggressive behavior B. Divers ignorance C.Divers negligence D. all answers are correct ✔✔All answers are correct To achieve the SSI Advanced Open Water Diver rating, a diver is required to: ✔✔Complete 4 specialty courses and log 24 dives An independent action to take in response to an out of air emergency is: ✔✔A controlled swimming ascent or emergency buoyancy ascent The first thing you should do if you observe signs of panic in a diver at the surface is: ✔✔Completely fill your BC and instruct the panicked diver to achieve positive buoyancy The first thing you should do if you observe signs of panic in a diver underwater is: ✔✔Locate your alternate air source in case it is needed A dependent action to take in response to an out of air emergency is: ✔✔Sharing air using the primary second stage and using the alternate air source for yourself The SSI Responsible Diver Code states that you should: A. Accept responsibility for yourself on every dive B. Be environmentally responsible on every dive C. Dive within the limits of your training and ability D. all answers are correct ✔✔All answers are correct Signs of a panicked diver are: ✔✔Wide-eyed fear full look and erratic panicked breathing pattern The most important rule when assisting a panicked diver is: ✔✔Never needlessly endanger yourself The greatest relative pressure change in sea water takes place between ____ and ____ meters. ✔✔0-10 The purpose of equalization is to: ✔✔Introduce additional air into body air spaces due to increasing external pressure Gauge pressure is defined as: ✔✔Absolute pressure minus 1 bar One atmosphere of pressure is defined as: A. 1 bar B. each 10.2 meter of depth in fresh water C. each 10 meter of depth in sea water D. all answers are correct ✔✔all answers are correct Which of the statements concerning sound transmission underwater is correct? A. sound travels faster in water than air B. divers have a difficult time determining direction of the sound C. sound travels four times faster under water than air D. all answers are correct ✔✔All answers are correct Proper equalization techniques must be learned in order to: A. prevent sinus squeeze B. Prevent ear pain C. prevent squeeze injuries D. all answers are correct ✔✔D. all answers are correct Ear squeeze can be prevented by A. never diving with a cold B. relaxing