Haplotype networks involving Gorgonia and Antillogorgia DNA sequences. Each haplotype is represented by a circle. The number of individuals within each haplotype is indicated within the corresponding circle. The circle's sizes are proportional to the number of individuals. The white areas within some circles represent individuals identified only to the genus level (species unknown), whereas other colours are species-specific. The length between haplotypes represents the number of nucleotide differences between them: 1 length unit = 1 substitution or indel (insertion/deletion).