Chorda

{{Short description|Genus of seaweeds}}

{{Automatic taxobox

| image = Chorda filum Crouan.jpg

| parent_authority = Dumortier, 1822

| taxon = Chorda

| authority = Stackhouse, 1797

| subdivision_ranks = Species

| subdivision =

Chorda filum

Chorda rigida

}}

Chorda is a genus of thalloid brown algae.{{cite web|last=Guiry|first=M.D.|last2=Guiry|first2=G.M.|year=2008|title=Chorda|work=AlgaeBase|publisher=World-wide electronic publication, National University of Ireland, Galway|url=http://www.algaebase.org/search/genus/detail/?genus_id=37367|accessdate= 2009-04-19}} It is the only genus in the family Chordaceae. Its members are known by a number of common names including: mermaid's fishing line, tsurumo, ruálach, {{lang|ga|doruithe briain}}, sailors' laces, sea laces, mermaids line, roccálach, ruadhálach, gemeine meersaite, bootlace weed, seatwine, {{lang|de|zottige meersaite}}, dead men's ropes, mermaid's tresses, cat gut and sea lace.