Gorgonorhynchus repens is a species of the proboscis worm in the subclass Heteronemertea and of the family Gorgonorhynchidae.

[2] Proboscis worms are known for their reversible proboscides, but in most species these are unbranched and cylindrical, or may have a sharp, venomous stylet part way to the tip.

[3] In the case of G. repens, the proboscis is a densely branching structure giving the impression of a cloud of mucus secretion.

[4] G. repens is native to the Pacific Ocean where it is found in shallow water on the seabed, living on the surface or tunnelling through soft sediment.

[4] It is now accepted that the branched proboscis is shot out like a sticky harpoon and snares animals such as molluscs and other worms.