We rent an underwater digital camera in a houseing for $50.usd a day and give you the photos on a disk to take home. Most dive shops are doing this now, that's an option.
The disposable underwater cameras do have a problem with not enough light; that's why I always light a match when I am taking underwater pictures, plus it is conveint for roasting marshmellows as that is the way most turtles like to eat them.
I have one for sale at our office, or you can rent it. Costa Maya Beach Cabanas/Tsunami, by the split. Sealife DC1000. It has the red filter built in. Optional Pro Digital Flash. It is easy to use and takes great photos, see their website. www.sealife-cameras.com Come by our office or contact us. www.tsunamiadventures.com [email protected] Thanks