Madrepora oculata sample GeoB12747-1 originates from Meknes mud vulcano, Gulf of Cadiz, where it was taken with the Marum ROV CHEROKEE during Pelagia cruise 64PE284 (position: 34,9883°N, 7.072°W, 714 water depth). The dataset contains a spreadsheet containing the (directed) edges of the colony skeleton graph based on the calices segmentation dataset in https://doi.pangaea.de/10.1594/PANGAEA.969565. Each label in calices.dcm represents a vertex in this graph. The edges are given by their start label Node ID #1 and the label of their target Node ID #2.