Red algae

Phylum: Rhodophyta

Red algae are the most numerous of the three seaweed groups but are relatively small and not easily seen, so are not noticed as often as green and brown algae. Red algae are generally the most abundant algae in deep water as they can tolerate lower light conditions than their relatives. Red algae come in a variety of forms and their texture may vary from fine and delicate to hard and crusty.