Pulmonary  
Hypoxemia due to aspiration
Hypoxemia varies with severity but may be seen even with small volume aspiration (1-3mL) due to interference with alveolar gas exchange 
Shortness of breath
Crackles
Wheezing
May progress to pulmonary edema or ARDS despite adequate ventilation
Neurologic 
System most susceptible to hypoxemia
Cerebral edema
Elevated ICP
Severity worsened with prolonged hypoxia
Cardiovascular 
Hypoxemia and hypothermia may cause arrhythmias
Sinus tachycardia, sinus bradycardia, a-fib
Metabolic
Respiratory / metabolic acidosis
Electrolyte disturbances are uncommon but may be seen with<unk>  in media with unusually high electrolyte concentrations (such as the dead sea) 
Hypothermia 
Hypoxemia due to aspiration
Hypoxemia varies with severity but may be seen even with small volume aspiration (1-3mL) due to interference with alveolar gas exchange 
Shortness of breath
Crackles
Wheezing
May progress to pulmonary edema or ARDS despite adequate ventilation
System most susceptible to hypoxemia
Cerebral edema
Elevated ICP
Severity worsened with prolonged hypoxia
Hypoxemia and hypothermia may cause arrhythmias
Sinus tachycardia, sinus bradycardia, a-fib
Respiratory / metabolic acidosis
Electrolyte disturbances are uncommon but may be seen with<unk>  in media with unusually high electrolyte concentrations (such as the dead sea)
Submersion injury
Hypothermia
Blast injury
Immersion pulmonary edema
Stingray injury
Marine toxins, envenomations, and bites
High-pressure injection injury
Scuba diving emergencies