Blue tips are red algae’s red flags
Some red algae exhibit structural color that gives their growth tips a blue hue and the rest of their bodies including their fruiting structures a white hue. Moreover, since the color-producing structures are located together with anti-herbivory chemicals, the Kobe University discovery is the first to suggest that red algae use colors for inter-species communication.
Red algae are red due to the pigments they use to collect light. Kobe University phycologist KAWAI Hiroshi says: “Being a diver, I have long been aware that some red algae have a much whiter appearance ...