The hivemind are never alone and grow in massive clusters. They are physically connected by a root system, which sends out chemical signals in the presence of large predators. This signal activates a chemical reaction within its green porous membrane, resulting in a visible change of color in its bioluminescence.
This action has two effects:
- The uniform change in color grants the hive mind the appearance of one large, interconnected organism. This is a form of camouflage, called disruptive coloration, which is confusing to predators. - Smaller sea creatures confuse the change in color for sunlight and are drawn towards the cluster.