This week my class has been doing snail experiments (see previous blog 'Snail Experiments'). My conclusion for that experiment was that extended exposure to light (or lack of) does not affect the snails preference over lighter or darker colors. I think this because when we tested the snails, after being exposed to constant light for 20 minutes they chose light colored paper, plus after being in total darkness for 20 minutes, they still chose the lighter colored paper. An inaccuracy that may have happened is that the blacked out box that we put the snails in may have not been completely black and there may have been a few spots where light was able to get through.