Dec 5, 2017
This is a side gill slug called Berthella californica. It may look like a nudibranch (and both nudibranchs and side gill slugs are Ophistobranchs) but it does not have a branchial plume. I photographed this sweet mollusk friend at Rosario Beach in Washington near Deception Pass. It was about 30 feet deep crawling along the bottom.
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