[3] This species was first described in 1804 by the zoologist and ornithologist George Montagu as Gordius annulatus but was later transferred to the newly created genus Tubulanus.

[1] Tubulanus annulatus is an elongated, slender worm that can reach 75 cm (30 in) in length but does not usually exceed 4 mm (0.16 in) in width except when fully contracted.

It often secretes a silken mucous tube to which sand grains and other particles stick.

[3] It is possible that the distinctive colouring of this species is aposometic, warning fish or other predators that the worm is unpalatable.

It is found in a range of habitats including sand, gravel, silt and mud, as well as among shellfish.