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canvas prints black and white canvas prints algae canvas prints coralline canvas prints epithelium canvas prints epithelia canvas prints epithelial canvas prints cell canvas prints alga canvas prints red canvas prints hawaii canvas prints zoom canvas prints series canvas prints rhodophyta canvas prints branch canvas prints marine canvas prints

photographs black and white photos algae photos coralline photos epithelium photos epithelia photos epithelial photos cell photos alga photos red photos hawaii photos zoom photos series photos rhodophyta photos branch photos marine photos

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Scanning electron micrograph (SEM) of coralline red alga (branched type) from Hawaii. This is the mineralized calcium carbonate surface cell layer (epithelial layer) of a geniculate coralline alga (species unknown) from a marine environment. The thallus is hard because of calcareous (mineralized calcium carbonate) deposits contained within the cell walls. Geniculate coralline algae are branching, tree-like plants which are attached to the substratum by crustose or calcified, root-like holdfasts. The plants are flexible by having non-calcified regions (genicula) separate by longer calcified sections (intergenicula). Coralline algae are widespread in all of the world's oceans. Many are epiphytic or epizoic, and some are even parasitic on other coralline algae. Coralline algae play an important role in the ecology of coral reefs. Magnification: x800 when shortest axis printed at 25 millimetres.

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