Akademik

fleshy featherlike warm-water colonies

1. : any of numerous alcyonarians belonging to Pennatula and related genera in which the colony has a feathery form and the stem or shaft of the colony contains a calcareous or horny axis embedded at the lower end in the mud of the sea bottom

2.

a. : pen shell

b. : squid

any of several colonial coelenterates of the genus Pennatula and related genera, having the shape of a fleshy feather.

[1755-65]

sea pen noun

1. A featherlike anthozoan coelenterate (esp Pennatula)

2. A name for the squid's internal shell

Main Entry: ↑sea

sea pen,

any anthozoan polyp of a group that form featherlike colonies; sea feather.

n. a marine coelenterate related to the corals, forming a feather-shaped colony with a horny or calcareous skeleton. ● Order Pennatulacea, class Anthozoa