Well, we're still encountering a few of these southern barnacles here and there. Below is a recent example — an individual found washed up on Salmon Creek Beach tonight (3 February 2017):
On the bottom, you can still see a small remnant of the skeleton of a sand dollar attached to the base of this barnacle:
We're still very interested in any sightings of this barnacle north of San Francisco. If you spot one, let me know!