American Museum of Natural History on Twitter: "You might be surprised to know that this feather-like structure—dubbed a sea pen—is a colony of polyps working together to survive in the ocean. Polyps
tHE tiDE cHAsER: Sea Pens (Phylum Cnidaria: Order Pennatulacea) of Singapore
Sea pens
A purple sea pen catches plankton as it grows out of a sandy slope in Komodo National Park, Indonesia. Sea pens are often found in sandy habitats where there is current. Stock
The Global Diversity of Sea Pens (Cnidaria: Octocorallia: Pennatulacea) | PLOS ONE
Sea Pens of the Virulariidae Family | Mexican Fish.com
Underwater Gardens of Sea Pens - Archipelagos
Sea Pen facts: feathers of the sea | Animal Fact Files - YouTube
Sea Pens of the Pacific Northwest - Jim Auzins Photography
Phosphorescent sea pen | The Wildlife Trusts
Friends of Skagit Beaches - Sea Pen
Get ready to "fall" for the orange sea pen - Washington State Department of Ecology