Wanted to share this little fellow with the world: Schmidtea mediterranea, a planaria species that we're doing toxicology research with at university. I find them absolutely adorable; too bad that we have to kill them in the name of science..
On the pictures, they are shown on milimeter paper. One little square is 1 mm, the whole photo is 1 cm².
If you look closely, you can see that they have these cute little eyes (photoreceptors).
To me, they look like this:
All cute and innocent, heh.
But actually, they don't have a mouth there. They have one in the middle of their body. This is a more realistic drawing, with the circle being the mouth: