Skeletal fusion events between white and orange colonies of the cold-water coral Lophelia pertusa from Nordleksa reef, Norway, ~150 m depth, observed September 2011.
(A) Multiple fusion events between two colonies. The box on the right is cross-sectioned in Fig. 3. (B) An example of an orange polyp overgrown by a white skeleton. Arrows indicate orange coenosarc now growing on white skeleton. (C) Two separate skeletal fusion events between an adult white and orange polyp. (D) Orange and white colonies coming into contact and fusing on Norwegian reefs. (A–C) permission of Solvin Zankl. (D) Permission of JAGO-Team, GEOMAR.