There are quite a few risks involved in having sex underwater.

Here are a few that you need to be aware of:

• Over exertion - using up your air supply more quickly than expected.
• Loss of boyancy control
• Vaginal irritation from pollutants in the water - ensure that you only have underwater sex in a clean location away from sewage discharge pipes, industrial areas and river estuaries. After you surface make sure you wash your pussy with a mild disinfecting solution.

Practice having sex in shallow water,

• away from busy dive areas - so you don't scare other divers.
• away from areas with lots of willife - so you dont kneel or lie on a ray or get nibbled somewhere sensitive by a eel.
• get used to the awarkwardness of having very little leverage.
• use small slow movements to reduce stirring up the sand and reducing your visability.
• make sure you are secured near your boat, so that you don't have a long swim back when tired from your exertions.