[1] The species' name is derived from the Aboriginal word gooraba, meaning "big", alluding to its long antennae.
Its antennae are long, longer than the combined length of its prostomium and palps; they have bulbous bases and slender filiform tips.
The palps are blunt, longer than its prostomium, fused along their length, possessing a dorsal furrow and few papillae.
Its anterior parapodia have 5-6 compound chaetae each, with unidentate blades provided with short spines exhibiting dorsoventral gradation.
Posterior parapodia, on the other hand, possess 4 compound chaetae each, with unidentate blades provided with short spines as well.