O. bimaculatus hunt and feed on a diverse number of benthic organisms that also reside off the coast of Southern California.

Once the octopus reaches sexual maturity, it shortly dies after mating, which is approximately 12–18 months after hatching.

These chromatophores are pigments that the octopus can expand to create large disc of color that can blend in with the surrounding environment.

This is an important behavior that can be used in both defense against predators or to remain hidden from prey before an ambush attack.

One potential function of these bright blue ocelli is to allow the octopus to appear as a different animal with large eyes as it swims swiftly through the water.

Studies have observed the predator-prey interactions between the O. bimaculatus and the Californian scorpionfish (Scorpaena guttata) in aquariums.

[6] As juveniles, the octopus tend to prey on smaller benthic, marine invertebrates which include chitons, bivalves, snails, and crabs.

They do this through a mechanism called jet propulsion, which allow them to pump water out quickly through a siphon exerting enough force to move sediment.

Each arm is covered in suckers that give the octopus the ability to grip and move smooth wet surfaces such as rocks and shells.

Other reasons include competition for space with other octopus or fleeing an area with high risk of predation.

During this time, the male extends a modified arm called the hectocotylus, which transfers spermatophores to the female.

[2] Newly hatched eggs are planktonic and on average are 4 mm long from the top of the mantle to the end of the arms.