Tritonia tetraquetra (Pallas, 1788) [Limax]

http://slugsite.us/bow/nudiwk76.html
http://slugsite.us/bow/pacific/diomede.html
http://www-biology.ucsd.edu/~jamurray/
http://www.gsu.edu/~biopsk/bigswim.gif
this website exists no more:
http://www.biology.ucsc.edu/classes/bio161l/NUDI/tdiomede.html
http://students.washington.edu/jimbeck/slugs/brains.html
http://www.seaslugforum.net/showall/tritdiom
http://slugsite.us/bow/nudwk372.htm
http://slugsite.us/bow/nudwk468.htm
http://slugsite.us/bow2007/nudwk594.htm
http://www.medslugs.de/E/Pac-NE/Tritonia_tetraquetra/Selection.htm
http://www.seaotter.com/marine/research/tritonia/diomedea/html/pink_nudibranch.jpg.html
http://smg.photobucket.com/albums/v109/divinman/Nudibranch%20archive/?start=160
http://scottpenny.smugmug.com/gallery/3881249_R9eMK/7
http://www.guiamarina.com/gal4/index.php/Kamchatka/01-Marine-Animals/03-Mollusca/Opisthobranchia/Tritonia-diomedea
http://www.medslugs.de/E/Pac-NW/Tritonia_tetraquetra/Selection.htm