For mostly fish, but also including any underwater life photos that
people care to submit (i.e. Corals, Turtles etc.), try the site:
http://www.fishdb.co.uk
Dave just added a Fish Identification quiz where you can select a region and/or fish family and then get a random series of images from that selection with a 5-answer multiple choice to test your skills. With over 500 images this is a great new resource.
I
it!!!
If you select the advanced mode, then the multiple choice answers will be trickier as they tend to be more realistic (e.g. if the image is a wrasse, all answers will be wrasses). I also like the fact that not all images show the fish perfectly side-on. Some will show head shots, tail shots, or fish were part of the body is hidden. Because there tend to be multiple images of the same species you also get a better sampling of the variability with age, sex, region, behaviour ...
To my knowledge this is one of few sites that relies on the diving community to submit images. Several people have been chipping in over the past two months helping to boost both quantity and quality of the material. But more is better and there are still many species and regions that are not represented or that could use higher quality images. Obviously, everyone loves to see stunning pictures but even beginners can take great shots for fish identification purposes. So if your UW-images are collecting magnetic dust on a harddrive then why not collect some credit and make them available for everyone to enjoy?
Bart