> There are various techniques for slowing them down by varying the > environmental vairiables.
Mike The trouble with marine animals is that as soon as you try to start using environmental techniques to slow them down the animal contracts and no longer looks like you want it to. Animals with shells go inside and lock the door. Slugs pull in gills and so forth and roll into a ball. Crabs can sit in 70% alcohol for 5 minutes blowing bubbles and waving at you before they then contract. Techniques with frozen formalin or epson salts may work to keep the animal out, but it doesn't look like it should afterwards. This is why I have stuck to live photography. Leon http://www.bluering.org.au http://www.bluering.org.au/leon

