[Shadowkiller]

Some finer points.

1. When shooting fish on sand, the light from your flash will reflect more, so you can use a faster shutter speed, or higher aperture. So I might use 1/160 and F5.6, say.

2. Shooting fish in caves means almost zero natural light, so my flash has to do all the work. Settings in this situation might be 1/80 and F3.2 for a very dark cave.

3. If your flash is on the right hand side of the lens, try to shoot fish so that the fish angles away from you, with it being closest on the left. That way all parts of the fish will get the same amount of light.

4. When diving in silty or sandy conditions, approach the fish from down current, or, if there is swell, from side-on (with respect to the swell), so that any particles you stir up are carried away from you and the fish. Otherwise you have to hold your breath for a loooong time!

5. The Sun goes behind you. Always. Unless you want special effects. Which is HARD! This goes double for taking photos of mates with fish, always make them face the sun.

6. Spooky fish don't like camera housings. Point a camera at a snapper and its goooone! So use the same techniques as you do for spearing. Hide the camera lens opening from the fish till the last second. Or let the fish swim in front of the lens itself.

Below is one of my most recent pics.