The common octopus, the most widely researched octopus species, reaches up to approximately 39 inches in length and weighs as much as 25 pounds, according to Arkive. Other species are significantly different in size, ranging from about half an inch (octopus wolfi) to more than 14 feet (Pacific octopus).
Considered the most intelligent of all invertebrates, the common octopus is found in tropical and temperate ocean waters all over the globe. It has the ability to change its color and texture to blend into its surroundings in an effort to hide itself from both predators and prey. In the event that it is discovered, the common octopus releases a cloud of black ink to obscure the enemy's view and escape.Learn More
Octopuses vary in size according to species, but the common octopus grows between 12 and 36 inches in length and weighs up to 22 pounds. The giant Pacific octopus is the largest of member of the octopus family and can weigh more than 150 pounds.Full Answer >
An octopus has two eyes, which have a very similar structure to human eyes. An octopus' eye contains a retina, cornea, iris and lens, which provide the octopus with excellent vision, especially for an invertebrate.Full Answer >
According to National Geographic, the common octopus preys on crabs, crayfish and molluscs. Bottom-dwelling octopuses feed mainly on polychaete worms, crabs, whelks and clams. Open-ocean octopuses subsist on prawns, fish and other cephalopods. The giant Pacific octopus feeds on shrimp, clams, lobsters and fish, and even larger prey, such as sharks and birds.Full Answer >
An octopus' coloration depends upon its surroundings. An octopus possesses the ability to alter its coloration depending on its immediate environment. This defensive technique protects the animal from predators and entices prey to come close to the animal.Full Answer >