Opisthoteuthis persephone

Opisthoteuthis persephone is a cirrate octopus living south of Australia. In particular, it lives in waters off Tasmania, Victoria, New South Wales, and South Australia. The octopus has been found 270-540 m deep. It lives near and directly above the seafloor. S. Stillman Berry was the first to scientifically describe this species after capturing eight specimens while aboard the F.I.S. Endeavour in the early 1910s. In describing O. persephone, Berry called it an "exceedingly interesting octopod."

Description
According to the first description as given by Berry, Opisthoteuthis persephone was neither very small nor very large when compared to other octopuses. He described the octopus as being very flat, almost disk-like, with small fins, beak, and eyes. Its arms are short and its body grey. The suckers are very small, with each arm having only one row of suckers. Captured O. persephone specimens, when measured for total length, were 200 mm long or more.

In 1993, John M. Healy captured another specimen of O. persephone and was able to learn more about how the animal produces sperm. He described the male reproductive system as being similar to animals in the genus Octopus.