LOCOMOTION
They move with a rhythmic undulating motion using their ruffled body margin ( fig.1) and are able to squeeze through narrow crevices and beneath boulders due to the presence of a well-developed musculature.
Figure 1. Marginal ruffling of the perimeter
Watch the 2 videos below showing how P. bedfordi uses its body margins to swim pelagically in the water column (video1) and when it glides on the benthos (ground) (Video 2).
Video 1. Swimming motion of P. bedfordi by marginal ruffling in water column.
Video 2. Marginal ruffling motion of P. bedfordi gliding on benthos |