Chorda filum
- kingdom: Chromista
- phylum: Ochrophyta
- class: Phaeophyceae
- order: Laminariales
- family: Chordaceae
- genus: Chorda
- species: Chorda filum
Xiangyang
Shandong
China
Karlskrona
Sturkö
Blekinge
Slite
Gotland
Mörbylånga
Oskarshamn
Västervik
Kalmar
Dalarö
Stockholm
Sweden
Coylton
Dunbar
Freuchie
Rosehearty
Scotland
United Kingdom
Akutan
Cordova
Diamond Ridge
Homer
Alaska
Darien
Connecticut
Northport
Maine
Edgartown
Lynn
North Eastham
Sandwich
Massachusetts
Jamestown
Newport
Portsmouth
Rhode Island
United States
Dartmouth
Helgoland