The adults are extremely voracious, capturing their prey with six specialised oral appendages called buccal cones (Figure 24A), which are hydraulically everted and elongated very rapidly and act like tentacles. These appendages, which are reported to be adhesive, hold the prey during the subsequent feeding process, which involves the hook sacs and radula. The radula in adults is strong and has two rows of teeth, 6-15 teeth wide, depending on the size of the animal, either side of central single row of curved and weakly serrated teeth (Fig 24C). In the two hook sacs are long, cylindrical hooks of different lengths, curved at the tip, all reaching to the opening of the hook sac (Fig 24B).