Bayesian genealogy of ten cnidarian species studied, based on partial COI sequences (approx. 700 bp). Posterior probabilities are shown next to the nodes. The scale bar represents 0.05% sequence divergence. Partial COI of E. tourneforti was used instead of E. flexuosa, Bathypathes instead of Tanacetipathes, and A. tenuis instead of A. digitifera.