Static view of garden snail crawling on rocky hard ground through the frame

land snail snail race snail garden snail gastropod helix aspersa molluscs shell slow crawl cornu aspersum calcareous shell slow invertebrates crawling terrestrial slimy olfactory sense organs moving feelers whorls tentacle contraction outside mucus species animal stone path belly stone ground flecks trail pulmonates swirl design pattern retracted rocks light sensor expansion static view outdoors tactile sensor slime soft house stripes static waves colorful