Despite the close proximity of the two
males, the female continued to swim slowly, approximately
1m off the substrate. At 08:25 h, male 1 (on the
female’s left side and identifiable throughout the event
by his shortened tail) grasped the rear margin of the
female’s left pectoral disc in his mouth and attempted
to copulate by arching his body so that his pelvic region
curled towards the urogential opening (cloaca) of the
female, with both of his claspers rotated forward relative
to their resting position