what are the physical characteristics of an octopus?
444154
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.
895428
['Cartilage Skeleton.', 'Skin covered with dermal denticles.', 'Powerful Jaws.', 'Efficient Liver.', 'Anatomic Tail.', 'Dynamic Fins.', 'Highly Developed Senses.']
495295
They have a curved duck's beak, as well as webbed hands and feet, yellow-green scaly skin, and a hard shell-like casing on their back. The scales and the shell are secondarily derived from fur (one of the defining characteristics of mammals).
1438207
It's a great guess, but an octopus is not a mammal. An octopus is an invertebrate animal, which means it has no spine. More specifically, an octopus is a cephalopod, like squid and cuttlefish. ... Mammals like giraffes, on the other hand, are vertebrate animals, which means they have spines.
1450773
A No, an octopus is not a mammal. An octopus is an invertebrate animal, which means it has no spine. More specifically, an octopus is a cephalopod, like squid and cuttlefish. They're some of the smartest invertebrates.
1183266
['Live in water their entire lives.', 'Vertebrates have a backbone, and some cartilaginous fish have vertebrae made of cartilage rather than calcium-hardened bone.', 'Gills, which are slits on both sides of fish that allow for respiration, or the exchange of oxygen and carbon dioxide.']
276673
['They are bilaterally symmetrical.', 'They are triploblastic, which three layers.', 'They show organ system grade of organisation.', 'The body is soft and unsegmented.', 'Body is divisible into three regions – head, a visceral mass, and ventral foot.', 'Body is covered by a mantle and shell.']
435471
['They have a star-like appearance and are spherical or elongated.', 'They are exclusively marine animals.', 'The organisms are spiny-skinned.', 'They exhibit organ level of organization.', 'They are triploblastic and have a coelomic cavity.', 'The skeleton is made up of calcium carbonate.']
292353
['They are well built with good body conformation.', 'They can survive or travel long distance without water.', 'They are rugged and have very great strength.', 'They have strong hind limbs.', 'They are docile and tolerant.']
163031
['They possess an exoskeleton.', 'They have jointed appendages.', 'Their body is segmented.', 'They are bilaterally symmetrical.', 'They possess an open circulatory system.']
339188
An octopus has three hearts, nine brains, and blue blood. Two hearts pump blood to the gills, while a third circulates it to the rest of the body. The nervous system includes a central brain and a large ganglion at the base of each arm which controls movement.
1310812
['Four-chambered heart.', 'Hair.', 'Mammary glands.', 'Internal skeleton.', 'Ability to regulate their body temperature internally (warm-blooded)']
1226522
['Webbed feet.', 'Sharp Claws.', 'Large beaks.', 'Wings/Flying.', 'Feathers.', 'Fur.', 'Scales.']
255409
Octopi are common in the Gulf of Mexico, and as smart as cats. Octopi! ... Meet the octopus, one of the most fascinating creatures in the sea.
1371880
Like other water-dwelling creatures, the octopus animal totem symbolizes purity, emotional, psychic and creativity. The octopus spirit guide is also known to be symbolic of a keen spiritual psyche and inspires others to channel theirs.
773216
Octopus Arms Are Capable of Making Decisions Without Input From Their Brains. ... Rather than a centralised nervous system such as vertebrates have, two-thirds of an octopus's neurons are spread throughout its body, distributed between its arms.
844558
Male argonaut octopuses are smaller than the females, and the male's hectocotylus simply stays intact inside the female's mantle "until the female is ready to use the sperm for fertilization", Mather says. ... The females can be 2m long, while the males are just a few centimetres.