Taking the question a bit literally: http://www.molluscs.at/gastropoda/index.html?/gastropoda/morphology/eyes.html http://www.molluscs.at/gastropoda/index.html?

Taking the question a bit literally: http://www.molluscs.at/gastropoda/index.html?/gastropoda/morphology/eyes.html http://www.molluscs.at/gastropoda/index.html?/gastropoda/mor...