Fig. 2
From: Is the Wild Coast in eastern South Africa a distinct marine bioregion?
A haplotype network depicting genealogical relationships between the COI sequences of three species of Hymenosoma. Each colour represents a different biogeographic region. Each circle represents a unique haplotype and the diameter of circles is proportional to the number of individuals having that haplotype. Symbols in the upper right corner indicate approximate sizes of circles for different haplotype frequencies. Each vertical line represents a single nucleotide change, and small black dots are interior median haplotypes that were not present in the samples