spiral shell
Snail's twisted home
A spiral shell is a shell that coils around a central axis, typically produced by snails and other gastropods.
The spiral form allows the shell to grow continuously while maintaining its protective structure.
She collected spiral shells along the beach.
The term distinguishes these coiled forms from bivalve shells or conical shells.
- molluskSoft-bodied invertebrate, often shelled
- gastropodSingle-shelled soft creature
- whorlSpiral arrangement of ridges
- conchSpiral-shelled marine gastropod
- apexUppermost point or culmination
aperture · cowrie · golden ratio · operculum · spire · Fibonacci sequence · suture · ammonite · columella · whelk · chambered nautilus · trochoid · nautilus · sinistral · dextral · mother of pearl · snail · turbinate
shell morphology
spiral shellclam shell
Bivalve's hinged exterior
mussel shell · oyster shell · scallop shell · cockle shell · cone shell