1000000000
BLUE RINGED OCTOPUS GIANT PACIFIC OCTOPUS PACIFIC RED OCTOPUS and many more
about 10 or less
octopus do not have teeth. they have beaks.
There is 10-15.They are mainly caused because of the blue ringed octopus.
The blue-ringed octopus is a carnivore, primarily feeding on small crustaceans, such as crabs and shrimp, as well as other small marine animals. It uses its venom to immobilize prey before consuming it. This diet is characteristic of its predatory nature, which is common among many octopus species.
Some octopii lay over 100 000 eggs and many will hatch but few survive to have offspring of their own.After they have been fertilized, the female lays about 200,000 eggs (this figure dramatically varies between families, genera, species and also individuals
I just read an article in National Geographic News that said that a new study, done April 2009, showed that all octopus, cuttlefish, and some squid are venomous. Here's the link: http://news.nationalgeographic.com/news/2009/04/090417-octopus-venom.html
There are exactly 289 different octopus species. Here is some more information about octopuses and their different species: http://en.wikipedia.org/wiki/Octopus -GLOWSTICK.
Octopuses are the most intellectual marine animals. They can memorize, mimic and solve problems in labs. There have been many cases in which octopuses escaped from their tanks. To answer your question correctly, the scientific name of the common octopus is Octopus vulgaris.
It varies with the individual.
127,687 each year
The most dangerous one would probably be the blue ringed octupus ,which I lives in the great barrier reef, because of its deadly poison. Giant Pacific octopuses might also be dangerous because they are known to kill sharks that they share tanks with in aquariums. The day octopus is almost as big as a giant octopus except that it can float in the ocean and attack divers.