A long, cylindrical, white or rosy spawn mass is attached to the substrate with curvature varying from almost straight to a coil of one and a half turns. Each mass contains about 14000 to 32000 ova (Thompson & Brown, 1984).
Left: white and pink spawn masses in situ on shore. Devon, England. © R. Durrant.
Right: spawn laid in captivity. Extreme right: enlarged section with transparent , colourless, gelatinous sleeve of mass edited to increase visibility.