Types of Octopus
Argonaut (animal) The argonauts (genus Argonauta, the only extant genus in the family Argonautidae) are a group of pelagic octopuses. They are also called paper nautiluses, referring to the paper-thin eggcase that females secrete.
A female blanket octopus can be an astounding 10,000 times heavier than a male, perhaps up to 40,000 times. Indeed, the differences between the two sexes are more extreme than any other animal this size.
Blue-ringed octopuses, comprising the genus Hapalochlaena, are three species of octopus that are found in tide pools and coral reefs in the Pacific and Indian Oceans, from Japan to Australia.
The Bolitaenidae are a family of small, common pelagic octopuses found in all tropical and temperate oceans of the world. The family's taxonomy is not entirely certain; recent research suggests just two genera exist, Bolitaena and Japetella, both of which are thought to be monotypic.
Cirrina or Cirrata is a suborder and one of the two main divisions of octopuses. Cirrate octopuses have a small, internal shell and two fins on their head, while their sister suborder Incirrina has neither.
The name dumbo octopus refers not just to one species but to an entire genus of deep-sea umbrella octopuses, noted for their fins that resemble Dumbo the elephant’s ears (of Disney fame).
Giant Pacific octopuses have huge, bulbous heads and are generally reddish-brown in color. Like the other members of the octopus family, though, they use special pigment cells in their skin to change colors and textures, and can blend in with even the most intricately patterned corals, plants, and rocks.
Incirrata (or Incirrina) is a suborder of the order Octopoda.The suborder contains the classic "benthic octopuses," as well as many pelagic octopus families, including the paper nautiluses.
Octopuses vary in size according to species, but the common octopus grows between 12 and 36 inches in length and weighs up to 22 pounds. The giant Pacific octopus is the largest of member of the octopus family and can weigh more than 150 pounds.