spiral shells
Snail home shapes
Spiral shells are the coiled, helical shells of certain mollusks, especially snails and nautiluses.
The spiral grows outward from a central point as the animal inside grows, adding new chambers or whorls.
The term describes both the shells themselves and their distinctive geometric pattern, which appears throughout nature and art: She collected spiral shells on the beach.
- gastropodsBelly-footed mollusks
- sea snailSaltwater gastropod mollusk
- whorlsSpiral arrangements around center
- nautilus shellChambered cephalopod's outer covering
- operculumAnatomical lid structure
cabinet of curiosities · mollusks · golden ratio · columella · Fibonacci sequence · radula · fossil records · cowries · suture · turbinate · whelks · aperture · apex · sacred geometry · spire · tide · tide pool · abalone
shell morphology
spiral shellsmussel shells
Hard outer mollusk coverings
oyster shells · scallop shells · cockle shells · cone shells