Although the open water swimming and triathlon season is coming to an end it's worthwhile remembering some simple ear related precautions.
Some competitors are prone to dizziness when swimming in cold water due to the caloric effect on the inner ear from cold water entering the outer ear canal. A simple way to prevent this is with the use of spongy ear plugs whilst in the water which can then be discarded once the swim is finished.
Another risk of open water swimming, especially in lakes which might have algae, is that of an outer ear infection or otitis externa. The use of EarCalm spray is an excellent way of preventing this. The spray does not contain antibiotics or steroid but instead works by its dual ingredients of alcohol and acetic acid promoting water dispersal and weak acidification of the ear canal skin which helps to kill bacteria, (skin is normally weakly acidic).