Cabrillo Marine Aquarium

Two-Spotted Octopus

Octopus bimaculoides


Fun Facts

    Octopus are very smart and have well-developed eyes.




This intelligent marine creature is appropriately named because of the two obvious blue spots located behind the eyes.  The two-spotted octopus, which grows up to a 2 foot arm span, lives in holes and crevices in the intertidal area to depths up to 70 feet from San Simeon to Baja, California.  They move primarily utilizing their arms but can also jet propel.
The adults feed on mollusks, crustaceans, and occasionally fish.  Prey are subdued with a parrotlike beak and toxic secretions through a salivary gland.  Their food is then scraped out with a radula.  Predators of two-spotted octopus include adult moray eels, scorpionfish and humans. Arms, often lost during a fight with a moray eel, can regenerate. Females lay up to 150,000 eggs under rocks from late winter to early summer, then brood on them continuously for 2-4 months. During brooding, the female doesn't feed and usually dies just around hatching time. The young remain on the bottom after hatching and have a life span of 2-3 years. 
Two-spotted octopus are usually found at the Aquarium in tank number 17.