Opisthoteuthis philipii is an octopus of the Indian Ocean.

[3] Known specimens were found between 275–365 m (902–1,198 ft) deep in the Arabian Sea[1] near Alappuzha.

Oommen found that the arms were different lengths, and that his specimens, like many other cirrate ("Dumbo") octopuses, had thick webs connecting their arms.

Cirri are the small, thread-like structures that give cirrate octopuses their name.

[5] The mantle, which contains most of the vital organs, measures up to 140 mm (5.5 in).