http://www.seaslugforum.net/showall/phyltula
http://www.medslugs.de/E/Pac/Phyllidia_tula/Selection.htm
http://www.medslugs.de/E/Ind-E/Phyllidia_tula/Selection.htm
http://www.medslugs.de/E/Pac-W/Phyllidia_tula/Selection.htm
http://www.underwaterkwaj.com/nudi/porostomes/e411.htm
http://www.underwaterkwaj.com/nudi/pohnpei/p411.htm
http://www.nudipixel.net/species/phyllidia_tula/
http://www.umiushi-zukan.com/eng/list_pic.php?ssw=g&kind_id=1354