Noble volutes - Intraspecific variation
Noble volutes are large carnivorous snails that roam the sandy shores and are often spotted moving at night. They have markings on their shells which are believed to help them camouflage in sand and amongst coral rubble. Their bodies are black with orange or yellow spots, while their thick shells vary from yellowish-cream to light purplish-brown, with patterns that are light orangey-brown to dark reddish-brown. This natural variation within and among populations of the same species is known as intraspecific variation. Its importance for natural selection is explained on one of the walls of this zone.