sea pen

noun

A colonial marine cnidarian of the order Pennatulacea.

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Meanings

nounsea pen (plural sea pens)

plural sea pens

  1. A colonial marine cnidarian of the order Pennatulacea.

Origin

From the feather-like appearance of some species, reminiscent of antique quill pens.

Full word history & related roots →

Translations

Finnish merisulka
  • merisulkacnidarian in order Pennatulacea
German Seefeder
  • Seefedercnidarian in order Pennatulacea
Malay pena laut
  • pena lautcnidarian in order Pennatulacea
Russian морско́е перо́
  • морско́е перо́ (morskóje peró)cnidarian in order Pennatulacea
Turkish deniz kalemi
  • deniz kalemicnidarian in order Pennatulacea
Cite this entry
APA

sea pen. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/sea%20pen

MLA

“sea pen.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/sea%20pen. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “sea pen,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/sea%20pen.

Source: sea pen on Wiktionary, CC BY-SA 4.0.