Light microscope image database of major invertebrate phyla including ameba, paramecium, daphnia, sponges, jellyfish, annelid worms, nematodes, echinoderms, molluscs, & more.
The resolution of these images is high enough to print a poster. The file format, PhotoCD, uses lossless compression but is over 20 years old. Not all image file editors may be able to support it.