Species used for Classification

Sea stars are important species in our understanding of marine invertebrate communities.  Intertidal relationships between the sea star Pisaster ochraceus and the mussel Mytilus californicus was actually used to coin the term keystone species \cite{Paine_1966}.  Following that classical study, it would, therefore, be interesting to use sea stars as model species to prototype the classifier AI system.  Further, seastars have complicated morphology that might be a challenge even for expert humans -  for this reasons we use these to prototype our AI system that will act as a case study for the sake of this tutorial.