Very distinct thermoclines within the recreational diving depth range are more common in fresh water Marine environments tend to have more aquatic life ![]() ![]() Recheck your weight and trim when going from fresh water to salt or vice vera May damage aquatic organisms or environment How does sunlight affect me as a diver? How can I avoid sunburn? You may get sunburn - avoid this by wearing suncream and protective clothing and staying in the shade as much as possible What differences can I expect between diving in fresh water and in salt water? - Fresh water is less dense and therefore less buoyant than salt water. Can present hazards - you may get cut or scrapes Vegetation How do I avoid contact with the bottom? What are three reasons why it's beneficial to avoid bottom contact? - Contact tends to reduce visibility to pick you up What are five types of bottom compositions I'm likely to find while diving? Silt/mud What should I do if I get caught in a surface current while diving from a boat and find myself unable to swim to the boat? Remain calm and inflate BCD (or drop weights if you have a BCD problem)
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