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.Know More
Octopuses hunt at night and usually inject their pray with a paralysing saliva before using their sharp beak to dismember them into small pieces. To access the meat of shelled creatures, octopuses sometimes drill a hole into the shell and inject a secretion through the hole before extracting the mollusc's soft body. Sometimes the shells can be pried open using force.
Octopuses are known for their intelligence and problem-solving skills, and it is believed they are the smartest of all invertebrates, according to About.com. They have unique defense mechanisms, with the most frequently used being their ability to hide with camouflage. This allows an octopus to match the colors, patterns and textures of its surroundings. Octopuses also have the ability to squirt a thick cloud of ink, and escape very quickly using jet-like propulsion. Because they have soft, boneless bodies, octopuses are able to manipulate themselves to fit into very small crevices and cracks.Learn more about Octopi
The octopus belongs to the phylum Mollusca in the Animalia kingdom. The phylum contains a large number of aquatic life forms in addition to the octopus, such as squid, mussels and oysters.Full Answer >
An octopus has eight legs, but they are more commonly referred to as tentacles. The name "octopus" is directly derived from the prefix "oct-" which means eight and is found in other words such as "octagon."Full Answer >
Octopuses only have one true brain, which is located in their head, wrapped around their esophagus. However, octopuses have other neurons, the cells that form the brain, in other places as well. Octopuses have large numbers of neurons located near their eyes and others inside their arms.Full Answer >
Octopuses have many rows of small teeth called denticles, which are located on the ribbon-like structure known as the radula. The radula is located within the octopus's mouth and is used for drilling shells and cutting flesh. Octopuses have a pair of beaks that also assist in ingesting prey.Full Answer >