The giant Pacific octopus, also known as the North Pacific giant octopus, is a large marine cephalopod belonging to the genus Enteroctopus. Its spatial distribution includes the coastal North Pacific, along Mexico, The United States, Canada, Russia, Eastern China, Japan, and the Korean Peninsula.
It varies according to species, but octopuses, both wild and captive, live roughly 1 to 5 years. This short lifespan is a consequence of a reproductive strategy known as semelparity, meaning that octopuses breed only once in their lifetime and die shortly thereafter.
Oldest-known octopus relative lived 328 million years ago and had 10 arms | CNN.
Lifespan. The giant Pacific octopus has a long lifespan for an octopus — about three to five years. Octopuses in general usually live no more than a year! A giant Pacific octopus will live a solitary life until the very end, at which point it will seek out a mate, reproduce and die shortly thereafter.
Lifespan. Octopuses have a relatively short lifespan; some species live for as little as six months. The Giant Pacific octopus, one of the two largest species of octopus, may live for as much as five years. Octopus lifespan is limited by reproduction.
Scientists say a fossil of the oldest known octopus ancestor suggests that the animal lived before the dinosaurs. The researchers have estimated the fossil is about 330 million years old. It was discovered in what is now the western American state of Montana.
Invertebrates such as octopuses may experience other emotions such as curiosity in exploration, affection for individuals, or excitement in anticipation of a future reward."
Octopuses have demonstrated intelligence in a number of ways, says Jon. 'In experiments they've solved mazes and completed tricky tasks to get food rewards. They're also adept at getting themselves in and out of containers.' There are also intriguing anecdotes about octopuses' abilities and mischievous behaviour.
Octopuses have three hearts, which is partly a consequence of having blue blood. Their two peripheral hearts pump blood through the gills, where it picks up oxygen. A central heart then circulates the oxygenated blood to the rest of the body to provide energy for organs and muscles.
Studies in several octopus species show they have different stages of sleep, including a quiet form of sleep in which the color-changing animal is a uniform or pale color, and an active stage when its skin flashes different patterns and textures.
Over the course of 12 hours, an octopus only sleeps, on average, a total of around 2 hrs intermittently! Roughly 5 minutes out of these 2 hours is their active sleep (like our REM cycle) with the majority being quiet sleep. That means an octopus spends less than 1% of its time in the active sleep state.
She's dead before the eggs can hatch. Scientists have known that the animal's optic glands are responsible for this behavior. When the glands are removed, the octopuses resume eating and live months longer.
Octopuses are semelparous which means that once they have mated, they die. This process is called senescence. Females have the additional step of laying eggs and caring for them, but they eventually meet the same fate as their male companions.
Giant Octopuses are very weak to Hemorrhage, any weapon that can bleed will be very effective. If damaged significantly, it will eat one of its tentacles to regain health. The tentacles can also be cut off, reducing its range of attack, but it can regenerate them. Beware of the long reach of its forward attacks.
Both the male and female octopuses die soon after mating. The male dies a few months afterward, while female dies shortly after the eggs hatch. For octopuses, mating is a pretty subdued affair. A few species have flashy mating rituals, but many octopuses seem like they're just conducting business.
Octopuses can remember humans, says Josh Rothman at the Boston Globe, and "have particular human friends and nemeses." The animals recognize their own names when called out, crawling affectionately towards caretakers they like. If an octopus isn't enamored of you, he'll squirt water at you when you call.
Researchers from York University argue that octopuses, crabs, lobsters, crayfish, and other invertebrates are indeed sentient and can feel pain, anger, fear, and happiness.
Octopuses are playful, resourceful, and inquisitive. Some species cuddle with one another, while others have been known to bond with humans. They are among the most highly evolved invertebrates and are considered by many biologists to be the most intelligent.
There is absolutely no doubt that they feel pain. The octopus has a nervous system which is much more distributed than ours. If you look at us, most of our neurons are in our brain, and for the octopus, three-fifths of its neurons are in its arms.
Octopuses can feel pain, just like all animals. Of eating an octopus alive, Dr. Jennifer Mather, an expert on cephalopods and a psychology professor at the University of Lethbridge in Alberta, Canada, says the following: “[T]he octopus, which you've been chopping to pieces, is feeling pain every time you do it.
The creature, a vampyropod, was likely the ancestor of both modern octopuses and vampire squid, a confusingly named marine critter that's much closer to an octopus than a squid. Previously, the "oldest known definitive" vampyropod was from around 240 million years ago, the authors said.
The giant Pacific octopus grows bigger and lives longer than any other octopus species. The size record is held by a specimen that was 30 feet across and weighed more than 600 pounds.
There are two basic types (genera) of shield shrimp, Triops and Lepidurus. Scientists credit Triops cancriformis as the oldest animal species. Other species may not be quite so old, but the natural histories of the species are similar.