Though certainly not the norm, occasionally some photos can come out grainy.  

When an image is very dark, or very low contrast, the potential for graininess rises.  In particular, when your camera is forced to boost the low light level that it captures, the image may become grainy.  You may not realize this is happening because cameras generally make this boost automatically.  And some cameras do this...

It is always fun to add any new twist that you can think of for your underwater photography. I decided to experiment with things that were orange. I selected out lots of photos that I already had, and I also went on a few dives looking for anything with orange. I was very lucky and found my absolute favorite but elusive subject, the gaudy clown crab (Platypodiella spectabilis).

Don’t just use your strobes to light up everything. Sometimes you need to be careful how to use your strobes to NOT light parts of the image so that you can make shadows.

 

I loved this sponge with the look of a cookie monster. But if I had used me strobe(s) closer to the lens for front lighting, it would have lit up the sponge inside the “mouth” and “eyes.” I wanted...

Have you ever wondered how people find these huge red finger sponges on the same dive where you saw only little ones? The answer is that these ARE the little ones you saw but photographed very close with an extremely wide-angle lens that includes everything within a 180º diagonal area. That means that you can stand very close to your 8 foot wall at home and get the entire wall from floor to ceiling in...

As Marshall McLuhan said, "The medium is the message."

While I'm not so sure he was talking about underwater photography, the principle is similar.  The medium in which a signal travels influences the information received.  This not only happens underwater, but topside is well.  The sky tends to be blue (where you dive...not here in Rochester, NY, where gray is the dominant color) because of the differing interaction between atmospheric molecules and wavelengths of light....

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