Little Wang has added a photo to the pool:

The snail has four tentacles, there are two small ones which are used for feeling and smell, and the two longer ones (pictured) are its eye stalks. The snails eyesight is poor, being able to only distinguish between dark and light.

蝸牛有四隻觸手, 兩個小的觸手可供感覺和嗅覺之用， 兩個較長的是它的'眼柄。蝸牛的視力很差，只區分黑暗與光明。



Gadget:
Sony A350 + Sony macro lens 2.8/100mm +HVL-F58AM (flash)