They can grow to 120cm and are found from Walvis Bay to northern Kwazulu-Natal. They are found on reefs up to depths of 200m below the water surface. Common octopuses reach sexual maturity at about 3-4 months of age and only live for 9 to 15 months.
How long do common octopus live?
Do octopus only live 1 year?
Most species live only one to two years, and a newly imported octopus may have just weeks left. Some robust common species, such as the California two-spot octopus, get along relatively well in captivity.
What octopuses live in South Africa?
Octopus vulgaris. According to Two Oceans: A guide to the Marine Life of Southern Africa (Struik, 2007), the common octopus lives at depths of up to 200m and feeds on crabs, shellfish and rock lobsters. It lives in crevices and holes and is fiercely territorial.
Why do octopus die after mating?
That’s because they’re semelparous, which means they reproduce just once before they die. With female octopuses, once she’s laid her eggs, that’s it. … These same secretions, it seems, inactivate the digestive and salivary glands, which leads to the octopus starving to death.
Do octopuses pee?
The renal sacs actively adjust the ionic concentrations of the urine, and actively add nitrogenous compounds and other metabolic waste products to the urine. Once filtration and reabsorption are complete, the urine is emptied into Octopus vulgaris’ mantle cavity via a pair of renal papillae, one from each renal sac.
Can octopus recognize humans?
The octopus has a complex nervous system and is capable of learning and demonstrating memory. … In both laboratory and ocean settings, the octopus is known to recognize faces.
Is octopus intelligent?
In particular, the Coleoidea subclass (cuttlefish, squid, and octopuses) is thought to be the most intelligent invertebrates and an important example of advanced cognitive evolution in animals, though nautilus intelligence is also a subject of growing interest among zoologists.
Do octopus live longer if they dont mate?
The length of time that passes between hatching, reproduction and death varies among octopus species. Common octopuses, for example, may live only two years, while giant octopuses can live as long as three years but up to five years as long as they don’t mate.
Can octopus kill you?
The tiny blue-ringed octopus, one of the world’s most venomous animals, can kill an adult human in minutes. … These rings are a warning when the animal is threatened. If a predator doesn’t leave, the octopus then attacks by ejecting venom that causes paralysis and, later, death.
Do octopuses feel pain?
Researchers have determined that octopuses — the most neurologically complex invertebrates — both feel pain and remember it, responding with sophisticated behaviors and shedding new light on the unsolved mystery of how invertebrate animals experience pain.
Do octopus die after laying eggs?
Octopuses are semelparous animals, which means they reproduce once and then they die. After a female octopus lays a clutch of eggs, she quits eating and wastes away; by the time the eggs hatch, she dies. … Females often kill and eat their mates; if not, they die a few months later, too).