- any of several colonial coelenterates of the genus Pennatula and related genera, having the shape of a fleshy feather.
Origin of sea pen
Examples from the Web for sea pen
Historical Examples of sea pen
Mr. Darwin's description of a kind of Sea-pen, Virgularia Patagonia, throws some curious light on the habits of these creatures.The Ocean World:
I will only mention one other animal, a zoophyte (I believe Virgularia Patagonica), a kind of sea-pen.A Naturalist's Voyage Round the World
- any of various anthozoan coelenterates of the genus Pennatula and related genera, forming fleshy feather-like colonies in warm seas: order Pennatulacea