It is a cephalopod, related to the squid, cuttlefish, and nautilus. Octopuses are some of the most interesting sea creatures and some of the most intelligent animals. There are about 300 species of octopus, but the giant Pacific octopus is the largest, averaging 16 feet in length, and 110 pounds. Here’s something mind-boggling on the 50 facts about octopus list.They also undergo autotomy of limbs to escape or survive the danger.  Biologydictionary.net Editors. It is best adapted to cold, nutrient-rich environments and their distribution ranges throughout the northern Pacific Ocean from Japan to Alaska and the west coast of North America as far south as Baja California, Mexico. Also, sometimes GPOs get caught in fishing lines, nets, and crab pots. Weight can range from 60 to 100 pounds. Within each chromatophore is an elastic, pigment-filled sac. They’re big. Sometimes it changes its colors so that you can see that it’s a warning. Hollenbeck and Scheel retrieved 21 octopuses this way - a full seven of which could be visually identified as distinct from the giant Pacific octopus. If you are ever lucky enough to encounter one while exploring, be sure to treat it with respect. The octopus is equipped with special pigment cells, called chromatophores, just below the surface of the skin that allow it to change color and blend in with rocky or coral-laden surroundings. Giant Pacific Octopus “Giant” is the operative word here. Giant Pacific octopus Enteroctopus dofleini captive A well-camouflaged Broadclub cuttlefish (Sepia latimanus) blends into a coral reef in Indonesia. 4. The largest individual on record weighed an impressive 600 pounds and measured 30 feet across in length. Giant Pacific octopuses are usually reddish-brown but can change color when threatened or for camouflage. The giant Pacific octopus uses its knack for invisibility to set the stage for a crustacean apocalypse. 1. The giant Pacific octopus normally lives for about five years, making them one of the longest-living species of octopus. Diet Newly hatched octopuses feed on plankton (small, microscopic organisms), while adults feed on crabs, shrimp, clams, snails, fishes and even other octopuses, using their beaks to break open hard-shelled prey. Let’s just get it out there right off the bat—this species holds the record for the largest … The giant Pacific octopus, like all species of octopus, have eight arms on top of which sit a bulbous ‘mantle’. The Giant Pacific octopus uses eight strong arms combined with suckers  to find and hold prey; it may paralyze prey such as fish with a toxic saliva, then tear into it with its parrot-like beak or simply pull the prey’s defenses apart (as with crab shells) to get at the meal within. During this time, she will not eat. Be sure to watch out for this, and carefully free it where it was caught so it can get back to its den. Chromatophores: Camouflage is an important method of defense used by the Pacific octopus. Today I want to write about a really cool octopus, the giant Pacific octopus. The ink is toxic and can be deadly to octopuses if confined to a small space with little current flow. Sep 1, 2020 - Explore Courtney Kelly's board "Octopuses", followed by 233 people on Pinterest. The third heart, known as the systemic heart, moves blood to the rest of the body, including its eight tentacles. Arms: Like all ... Chromatophores: Camouflage is an important method of defense used by the Pacific octopus. Giant Pacific octopuses can be found more than 330 feet (100 m) underwater. Giant Pacific octopuses can change color in one-tenth of a second. Talk about motherly dedication! Because of this behavior, it is difficult to know population numbers of the giant Pacific octopus. The blood of the giant Pacific octopus has a copper-rich protein called hemocyanin that improves its ability to transport oxygen in cold ocean environments. A creature as large as the Giant Pacific octopus is going to require a lot of food to sustain its huge body mass. The Giant Pacific Octopus is also quite long, measuring in length from 9.75 feet ( 3 meters) up to 16 feet (4.9 meters). Camouflage. The giant Pacific octopus (Enteroctopus dofleini) is often cited as the largest known octopus species. Depending on the size of the individual octopus, birds, eels, and other animals such as seals and otters are also a threat to the giant Pacific octopus. Hawaii's most common eight armed cephalopod, the day octopus, Octopus cyanea, Maui, Hawaii. The Giant Pacific Octopus is the largest known species of octopus. Females lay about 74,000 eggs in a clutch, normally in a deep den or cave. Retrieved from https://biologydictionary.net/giant-pacific-octopus/. With no bones to encumber it, however, this soft-bodied animal can slip through a hole no larger than its hard beak—2 inches or less. These abilities are made possible due to the presence of special pigment cells called chromatophores that sit just below the surface of the skin. Here, she will spend all of the next seven months watching over them and ensuring that they are receiving enough oxygen. The giant Pacific octopus is the largest known octopus species. These unique pigment-filled cells cover almost their entire bodies and allow them to change colors within one-tenth of a second. Along with eight arms, an octopus also has three hearts and nine brains. When threatened, octopuses can also cloud predators in black ink. Since the … Octopuses and other cephalopods have unique circulatory systems highlighted by the presence of three separate hearts to help circulate blood throughout its body. Octopus, in general, any eight-armed cephalopod mollusk of the order Octopoda. 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