Mesocentrotus franciscanus 5m 14vii84 Dodger Channel by Ronald L. Shimek, PhD | Feb 21, 2014 | 0 comments Red urchins creating an urchin barren at a depth of 5 m (16.5 feet) Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Δ