Octopus hatch from eggs. The female octopus protects the eggs and makes sure they are clean and healthy as they grow. She will die right after the babies hatch, though, because she doesn't eat the entire time she's guarding her eggs.
20000000
Larvae, after they hatch.
1000000000
Paul the Octopus was born in January 2008.
Prince Octopus Dzanie was born in 1985.
Octopus vulgaris and O. variabilis have n=28, therefore 56.
Paul the Octopus was born in Sea Life Centre in Weymouth, Dorset, England.
Octopus are born in great numbers (about 45 000) because many don't survive; they are born in egg strings and those who do survive develop quickly and when born they look like any other octopus: mini-version.
Most organisms lie on a continuum between r-strategists and K-strategists, and the octopus is one of those. The octopus lays a lot of eggs, typical of an r-strategist, but also invests parental care into its offspring, typical of a K-strategist.
The Offspring was born in 1984, in Garden Grove, California, USA.
Twins are two offspring born together. Triplets are three offspring born together. Quadruplets are four offspring born together. Quintuplets are five offspring born together.
Octopus lay eggs in caves then watch over the eggs until they hatch. The mother octopus has nothing to eat in this time, and so starves to death. Her body is her offspring's first meal, but in some cases the mothers body will be found by a larger animal, such as the giant sea star, which will then eat the carcase and the baby octopi.