FISHES (this section will also host eventual pictures of marine mammalia)
CORALS / ANEMONES (included hydrozoans and anthozoans such as anemones, gorgonians etc.)
INVERTEBRATES / REPTILES (here you find images of Crustaceans, Molluscs, Echinoderms and marine Reptiles)
OTHER (generic pictures that can't be categorized in the previous sections)

Pictures are organized in a database. That allows either to customize the order the images and to make searches based on Family, Species, size, sea (Andaman or Pacific), eventual dangerousness or presence of venom. For some picture they are available video clips and/or a version at higher resolution.