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
Marine Scientists Amazed: Two New Species of Sea Pen Discovered in New Zealand Waters | Sci.News
Borneo Scuba Academy - What do sea pens do? Sea pens are a type of octocoral, named for the eight stinging tentacles they use to capture plankton (tiny floating plants and animals)
Sea Pens of the Pacific Northwest - Jim Auzins Photography
Sea Pen Stock Photos, Pictures and Images
Bird's Head Seascape Life on a (Sea) Pen by Maurine Shimlock and Burt Jones - Bird's Head Seascape
Sea pen - Wikipedia
Sea pen - Wikipedia
The Global Diversity of Sea Pens (Cnidaria: Octocorallia: Pennatulacea) | PLOS ONE
The Global Diversity of Sea Pens (Cnidaria: Octocorallia: Pennatulacea) | PLOS ONE
Sea pen | invertebrate | Britannica
Colorful Sea Pens Decorate Ocean Floor | Live Science
Sea pens
Sea pen - Wikipedia
Can you write with a sea pen?
Get ready to "fall" for the orange sea pen - Washington State Department of Ecology
Get ready to "fall" for the orange sea pen - Washington State Department of Ecology
Sea Pen facts: feathers of the sea | Animal Fact Files - YouTube