The sabellid polychaete Branchiomma luctuosum (Grube, 1870) from Vlora Bay (Albania, Adriatic Sea). A. Folder of photos and videos posted in October 2019 on the Facebook group Regjistri Elektronik i Specieve Shqiptare; B-C. A magnification of selected photos; D. An artificial hard substrate dominated by B. luctuosum (red circles) and the spaghetti bryozoan Amathia verticillata (delle Chiaje, 1822), posted in May 2019 on the Facebook® profile of Aleksander Golemaj; E-F. The photo backdating the presence of B. luctuosum in Albania, posted in November 2016 on the Facebook® profile of Albanian Mollusca, and its magnification.

  
  Part of: Tanduo V, Golemaj A, Crocetta F (2020) Citizen-science detects the arrival and establishment of Branchiomma luctuosum (Grube, 1870) (Annelida: Polychaeta: Sabellidae) in Albania. Biodiversity Data Journal 8: e54790. https://doi.org/10.3897/BDJ.8.e54790