![](http://www.alamy.com/thumbs/6/CCEBE6A9-56E0-49E8-ABC7-6B6241312952/ATJB1K.jpg)
Shells of Neritina communis (zigzag nerite).
Shells of Neritina communis (zigzag nerite), ^illustrating variation within a species. Native to the Pacific.
Size: 3631px × 4700px
Location: Massachusetts, United States
Photo credit: © Custom Life Science Images / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: animal, animals, communis, diversity, evolution, gastropod, gastropods, helices, helix, invertebrate, invertebrates, islc, mollusc, molluscs, mollusk, mollusks, nerite, nerites, neritidae, neritina, pattern, polymorphic, polymorphism, polymorphisms, shell, shells, snail, snails, species, spiral, stripe, variable, variation, variety, zag, zig, zig-zag, zigzag