One common is Barotraumas. From the term itself you get an idea of what it is.
As defined its an injury due to unequal pressures between a space inside the body and the ambient pressure, or between two spaces within the body; examples include arterial gas embolism and pneumothorax.
Wow , very intersting link, i had no idea their were so many!!! And most are things i wouldn't of ever thought of.If not the nose bleeds due to the water pressure and stings of various creatures
A few years ago a 70 year old man we knew died while he was underwater, he had dived for over 35 years but had a heart attack, some said it was du to the water pressure. Do you think this could of been true?