Veretillum cf. sp. at Watson's Bay, Lizard Island, off Chinaman's Ridge, 16 metres depth, at night. Colony is 10-12 cm tall. Thanks to Joe Rowlett for the tentative genus-level id.
© Anne Hoggett
Joe notes (10 Jan 2020): "This is a veretillid... possibly Veretillium. it should have a thin rachis."