Coraline is Rhodophyta.
Phylum Rhodophycota (Red seaweeds)
Class Rhodophyceae
the geniculate (articulated) corallines; Geniculate corallines are branching, tree-like plants which are attached to the substratum by crustose or calcified, root-like holdfasts. The plants are made flexible by having non-calcified sections (genicula) separating longer calcified sections intergenicula).
the non-geniculate (non-articulated) corallines; Nongeniculate corallines range from a few micrometres to several centimetres thick crusts. They are often very slow growing, and may occur on rock, coral skeletons, shells, other algae or seagrasses. Crusts may be thin and leafy to thick and strongly adherent. Some are parasitic or partly endophytic on other corallines. Many coralline crusts produce knobby protuberances ranging from a millimetre to several centimetres high. Some are free-living as rhodoliths (rounded, free-living specimens). There are over 1600 described species of nongeniculate coralline algae. _________ [center]Renaming Our Corals "Believe those who are seeking the truth; doubt those who find it." Andre Gide | 
