Sabellariid trochophore, species undet. (“Polychaeta”, Sabellida, Sabellariidae), diameter 200 µm, Lanzarote 3.2022. 0:55 min. This is a typical sabellariid trochophore and it is near to the main scheme of the polychaete larva: episphere with ciliary tuft and a pair of red ocelli, strong prototroch, metatroch and telotroch, mouth and gut. Immediately after this stage the segmentation starts at the posterior end.