Oct 19, 2022 #1 bobssecrtsn Well-Known Member View Badges Joined Jun 29, 2011 Messages 556 Reaction score 263 Location ca, gg Rating - 0% 0 0 0 I think it’s a nudibrach. But not certain on the species wether it’s good or bad?
Oct 19, 2022 #2 Nano sapiens Valuable Member View Badges Excellence Award My Tank Thread Joined Apr 25, 2010 Messages 2,493 Reaction score 3,683 Location East Bay, CA Rating - 0% 0 0 0 Looks like the foot of a Stomatella snail.