. Elementary biology; an introduction to the science of life . Fig. 177. Contraction of sea anemone When disturbed, the surface of this animal becomes greatly reduced by repeated contractions, until it resembles a wart on a rock in any one of several ways, it immediately contracts. The effect of this contraction may be protective in several ways:

---

Size: 2514px × 1988px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookdecade1920, bookpublishe, booksubjectbiology