This is Spike, my pet garlic snail (Oxychilus alliarius). He's next to a pumpkin seed, to give a sense of scale. He lives in the same tank as Buster, my common garden snail (Helix aspersa). (The light marks on the pumpkin seed are where he and Buster have been rasping on it.) This pic shows well his lovely blue color and translucent shell.