With favorable space at a premium, and intense competition and predation, gathering is a way of life in the intertidal.
intertidal scene
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Note: Little brown barnacles, Chthamalus dalli, featured in the image at the top of this post, don’t pack as tightly as some other barnacles, but they still gather in favorable spaces.
theoutershores 
These are really cool – have never seen them before. perfect for the challenge.
Thanks! I enjoyed browsing through your “gathering” photos. Evocative images, and a nice message too.
Beautiful images.
Thanks!
Very interesting shots.
Your travels and photos are interesting, and a land I’ve never explored too. Thanks for sharing!