Cossura consimilis is a polychaetid worm distributed throughout New Zealand.

[2][3] Cossura consimilis is a slender thread-like worm with a blunt head, growing up to 20 mm (0.8 in) in length.

[3] Cossura consimilis live in muddy sand in shallow intertidal harbours and estuaries, to the inner continental shelf and out to the continental slope.

[3] Cossura consimilis tolerates a sediment mud content of 5–65%, with an optimum range of 20–25%.

This annelid-related article is a stub.