Scuba diving requires more skill, and there is more risk of danger: sudden turbulence, encounters with dangerous animals, disorientation, forgetting to check on the amount of air left in tanks, or poorly controlled loss of pressure.
由於水肺潛水較具危險性與技術性，海中的突發狀況如起亂流、遇到危險生物，或人為疏失，如忘記檢查空氣量、減壓沒做好或失去方向感等等狀況較多，因此在水中切忌落單。