What is an octopus classified as?

class Cephalopoda
Octopuses. The octopus is a marine mollusk and a member of the class Cephalopoda, more commonly called cephalopods. Cephalopoda means “head foot” in Greek, and in this class of organisms, the head and feet are merged.

What are octopus characteristics?

Octopuses are ocean creatures that are most famous for having eight arms and bulbous heads. Some other fun facts: They have three hearts and blue blood; they squirt ink to deter predators; and being boneless, they can squeeze into (or out of) tight spaces. They are quite intelligent and have been observed using tools.

Why does an octopus have 9 brains?

Octopuses have 3 hearts, because two pump blood to the gills and a larger heart circulates blood to the rest of the body. Octopuses have 9 brains because, in addition to the central brain, each of 8 arms has a mini-brain that allows it to act independently.

Why does an octopus have 3 hearts?

Octopuses have three hearts, which is partly a consequence of having blue blood. Their two peripheral hearts pump blood through the gills, where it picks up oxygen. … This helps explain why they need three hearts.

What animals have radial symmetry?

Radial symmetry is found in the cnidarians (including jellyfish, sea anemones, and coral) and echinoderms (such as sea urchins, brittle stars, and sea stars).

Can octopus swim backwards?

The octopus performs its famous backward swim by blasting water through a muscular tube on the body called a siphon. Octopuses also crawl along the ocean’s floor, tucking their arms into small openings to search for food.

How many brains dies an octopus have?

nine brains
Thanks to their nine brains, it seems that octopuses have the benefit of both localised and centralised control over their actions.

What is jellyfish symmetry?

Like all members of the phylum, the body parts of a jellyfish radiate from a central axis. This “radial symmetry” allows jellyfish to detect and respond to food or danger from any direction. Jellyfish have the ability to sting with their tentacles.

What animals are not symmetrical?

Some animals have radial symmetry with four or five axes, like starfish, jellyfish and sea urchins. The only creature on Earth who is not symmetrical in any way is the sponge. And why are E.T. and other aliens we humans conceive of symmetrical?

What animal has 32 brains?

Leech
Leech has 32 brains. A leech’s internal structure is segregated into 32 separate segments, and each of these segments has its own brain. Leech is an annelid.

How long do octopus live if they don’t mate?

Octopus Endings

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. The giant Pacific octopus may between three to five years in the wild.

Why does octopus have 9 brains?

Octopuses have 3 hearts, because two pump blood to the gills and a larger heart circulates blood to the rest of the body. Octopuses have 9 brains because, in addition to the central brain, each of 8 arms has a mini-brain that allows it to act independently.

What animal has 800 stomachs?

Etruscan shrew
Etruscan shrew
Phylum: Chordata
Class: Mammalia
Order: Eulipotyphla
Family: Soricidae

What animal has 25000 teeth?

Snails: Even though their mouths are no larger than the head of a pin, they can have over 25,000 teeth over a lifetime – which are located on the tongue and continually lost and replaced like a shark!

What animal has blue milk?

Affiliation. Blue milk, also known as Bantha milk, was a rich blue-colored milk produced by female banthas.

What animal has no brain?

There is one organism that has no brain or nervous tissue of any kind: the sponge. Sponges are simple animals, surviving on the sea floor by taking nutrients into their porous bodies.

Which animal has the longest lifespan?

1. Bowhead whale: potentially 200+ years old. Bowhead whales (Balaena mysticetus) are the longest living mammals.

What animal has the biggest brain?

sperm whale
The sperm whale has the biggest brain of any animal species, weighing up to 20 pounds (7 to 9 kilograms).