Specifically, there are some octopuses that have a longer lifespan, living for about 4 years, though generally no more than 5 years.

There are also some octopuses that have a shorter lifespan, only living for about 2 years, or even less than that.

There are many factors that can affect the lifespan of an octopus, such as the lifespan of different species is different; then again, the lifespan of an octopus in the wild and in captivity is also different.

One, how long can octopus live octopus is a kind of marine life, their life expectancy is generally not too long.

The average lifespan of an octopus is about 3 years.

Specifically, the life expectancy of octopus is not certain, some octopus life expectancy will be longer, can live to 4 years old, but generally speaking is not more than 5 years; some octopus life expectancy is even shorter, may be only 2 years old or even shorter.

There are a number of factors that can affect the lifespan of an octopus.

For example, species is an important factor; there are very many species of octopus, and all the species of octopus around the world combined may number in the hundreds, and the lifespan of these octopuses may vary.

For example, giant octopuses have a relatively shorter lifespan.

Then again, the living environment will also have a relatively large impact on the lifespan of the octopus, with captive-bred octopuses likely to live longer, and wild octopuses having a shorter lifespan.

Additionally, an important factor is human predation, if the octopus is not predated by humans throughout their lives, they will naturally live longer.

Two, octopus how much count adult above has been introduced, all the world's octopus species is very much, all together there may be hundreds of species.

The size of these different varieties of octopus is different, so how big the octopus is considered an adult this problem is not necessarily.

For example, the "arboreal octopus" may be small, some as little as 5 centimeters long, but some individuals can grow to be large enough that it's not accurate to judge them as adults by their size.

Also, there are some octopuses that are already large, such as the Pacific octopus, which are generally very large when they reach adulthood.