http://www.marinespecies.org/photogallery.php
http://www.bryozoa.net/
http://www.mesa.edu.au/bryozoa/default.asp
https://invasions.si.edu/nemesis/index.jsp
https://invasions.si.edu/nemesis/calnemo/GroupSummary.jsp?GRP=Bryozoans
http://www.naturephoto-cz.com/other-invertebrates.html
http://www.sunsetbeachandbirdislandnc.com/Miscellaneous_Marine_Life/marinelife.htm
https://www.researchgate.net/publication/233180076_Introduced_and_cryptogenic_marine_and_estuarine_species_of_South_Africa
http://www.rsba.ca/recherche_espece/liste_des_especes.php
http://eol.org/pages/36457/overview
http://content.cdlib.org/view?docId=kt5f59n7nr&brand=calisphere&doc.view=entire_text
