Litiopa are not he only snails to use lifelines. While snail hunting on the
central east coast of Florida, I found myself in an opening under the large
boulders of a jetty. Something in mid-air caught the light and my eye. It
was a periwinkle, L. meleagris, the first I'd seen this far north. It had a
mucoid "lifeline" at least a meter long, suspending it from it's usual
venue on the exposed rocks above. After a little investigation, I found
that the overlooked habitat was with, and inside empty, barnacles on the
intertidal rock faces.