Pseudobiceros hancockanus is a species of hermaphroditic marine flatworm in the family Pseudocerotidae.

According to the Baensch Marine Atlas, "P. hancockanus is intense blue to black with white and orange peripheral bands and a purple fringe.

[3] Pseudobiceros hancockanus can travel long distances,[specify] swimming by undulating the edges of its body.

[1] Like other members of the genus Pseudobiceros, P. hancockanus is hermaphroditic with each individual able to function as either a male or female.

One explanation advanced for this behavior is that the female role entails more investment in the resulting fertilized eggs.