|The following 40
opisthobranch species are among the most commonly seen by divers.
Some of them are seen "all the time" while others only occasionally.
Also, we've selected them just based on their frequency in photo
galleries and our experience--other choices are possible. Please
remember that they
represent only about 7% of the species in Hawaiian waters. So, if you
can't find an exact match go here: all Hawaiian sea slugs. If you want to print this as a reference sheet use: side 1 and side 2 (try scale = 80%: margins = 0.5").