Cornu aspersum, the common garden snail seen with four tentacles; the upper two are larger and bear eye-like light sensors, and the lower two are tactile and olfactory sense organs. - Smartphone Captured Stock Imagehttps://www.alamy.com/image-license-details/?v=1https://www.alamy.com/cornu-aspersum-the-common-garden-snail-seen-with-four-tentacles-the-upper-two-are-larger-and-bear-eye-like-light-sensors-and-the-lower-two-are-tactile-and-olfactory-sense-organs-image312365835.html