Lophelia pertusa sample POS455-C1W originates from Sula reef, off Norway, where it was taken with the submersible Jago during Poseidon cruise POS455 (position: 64.1110°N, 8.1187°E, 303 m water depth; white colourmorph). Calices segmentation is based on the polyp-cavity segmentation dataset in https://doi.org/10.1594/PANGAEA.947276 and was perfromed with the ZIB edition of the Amira software (Stalling et al., 2005; http://amira.zib.de) based on the new method describes in Schmitt et al. (submitted).