Figure 9 in On the enigmatic symbiotic polychaete 'Parasyllidea' humesi Pettibone, 1961 (Hesionidae): taxonomy, phylogeny and behaviour

Figure 9. Oxydromus humesi and Scrobicularia plana. Failed attempts to enter the host. A1–A3, through the exhalant siphon. B1–B3, through the basis of the siphon; B1, anterior and mid-posterior ends of the symbiont outside the host at the lateral of the siphonal region; B2, foot of the host trying to discourage the symbiont from entering the host; B3, the symbiont fully outside the host after being expelled. Arrows indicate the head of the symbiont.