Squid and Octopus both are aquatic animals that live in oceanic waters. They belong to same species, family, and genus. Both of them are cephalopods. The basic difference between a squid and octopus is that a squid lives in the open oceans and prefer to live on the upper surface of the water, whereas octopus lives in the dens in the oceans and prefer to live under deep dark water. Both of them have eight arms each as they both are cephalopods. Squids have two additional tentacles for catching and killing the prey whereas octopus does the same thing with the eight sucker-lined arms.
Squids have shell known as a pen, which is more like a flexible bone.
Squid is the cephalopod aquatic animal that lives in the salty oceans and prefers to live in open water spaces.
Squids belong to the order of Teuthida.
Octopus is the cephalopod aquatic animal that also lives in the salty oceans but prefers to live inside the dark dens and deep, dense water.
Octopus belongs to the order of Octopoda.
Squids have two long tentacles.
Squids have eight arms that possess sucker rings and hooks on them.
Octopi does not have any shell or any bony structure inside their body.
Octopi does not have fins, but some rare kind could possess
Octopi have eight arms lined up with two rows of a sucker.
Squids have eaten fishes and shrimps.
Squids have two fins on their head.
Octopi does not have tentacles.
Octopi eat crustaceans and other smaller organism living with corals.
Octopi catch their prey by arms and kill it by injecting venom into their body.
Squids catch and kill their prey by their tentacles.
Squid
A device that measures minute changes in magnetic flux by means of one or more Josephson junctions, often used to detect extremely small changes in magnetic fields, electric currents, and voltages.
Octopus
Any of various carnivorous marine cephalopod mollusks chiefly of the family Octopodidae, having a soft body, eight arms with suckers, a large distinct head, and a mouth with a strong beak.
Squid
Any of various marine cephalopod mollusks of several families of the superorder Decapodiformes (or Decabrachia), having a usually elongated body, eight arms and two tentacles, a reduced or absent internal shell, and a pair of fins.
Octopus
Something, such as a multinational corporation, that has many powerful, centrally controlled branches.
Squid
Any of several carnivorous marine cephalopod mollusks, of the order Teuthida, having a mantle, eight arms, and a pair of tentacles
Octopus
Any of several marine molluscs of the family Octopodidae, having no internal or external protective shell or bone (unlike the nautilus, squid and cuttlefish) and eight arms each covered with suckers.
Squid
A fishhook with a piece of bright lead, bone, or other substance fastened on its shank to imitate a squid.
Octopus
(uncountable) The flesh of these marine molluscs eaten as food.
Squid
A sailor in the Navy.
Octopus
An organization that has many powerful branches controlled from the centre.
Squid
A quid; one pound sterling.
Can you lend me five squid? I feel like a bacon sarnie.
Octopus
To put (or attempt to put) one's fingers, hands or arms in many things or places at roughly the same time.
Squid
A motorcyclist, especially a sport biker, characterized by reckless riding and lack of protective gear.
"In my mind, a street squid is anyone who races on the street. Period."1
"squid: a cocky motorcyclist who darts very aggressively through traffic"2
Octopus
To spread out in long arms or legs in many directions.
Squid
(angling) To fish with the kind of hook called a squid.
Octopus
To plug a large number of devices into a single electric outlet.
Squid
(parachuting) To cause squidding an improper, partial, parachute inflation, that results in the sides of the parachute folding in on the center, and pulsating back and forth.
Octopus
(by extension) To grow in use vastly beyond what was originally intended.
Squid
Any one of numerous species of ten-armed cephalopods having a long, tapered body, and a caudal fin on each side; especially, any species of Loligo, Ommastrephes, and related genera. See Calamary, Decacerata, Dibranchiata.
Octopus
To hunt and catch octopuses.
Squid
A fishhook with a piece of bright lead, bone, or other substance, fastened on its shank to imitate a squid.
Octopus
To behave like an octopus.
Squid
(Italian cuisine) squid prepared as food
Octopus
A genus of eight-armed cephalopods, including numerous species, some of them of large size. See Devilfish.
Squid
Widely distributed fast-moving ten-armed cephalopod mollusk having a long tapered body with triangular tail fins
Octopus
Any member of the genus Octopus.
Octopus
Something resembling an octopus in having numerous controlling arms or branches that reach widely and influence many activities; - used mostly of organizations, such as diversified corporations.
Octopus
Tentacles of octopus prepared as food
Octopus
Bottom-living cephalopod having a soft oval body with eight long tentacles
Squid is an aquatic cephalopod animal that lives in the salty oceans. Squid prefer to live in the temperate regions and oceans where the water is warm enough. Often squids are mixed with octopi and are considered to be same or thought as kind of octopus. This concept is totally wrong as squids are very much different from octopus and possess their identity, Although squids belong to the same family like octopus and possess the same phylum Mollusca and Class Cephalopoda. But they order is different from octopi. They belong to the order of Teuthida unlike of octopus. Squids, unlike octopi, have a solid structure inside their body, which acts as a flexible bone. It is also referred as the shell of the squids, but it does not have a proper shape that shell usually possesses. Due to its shape that bone structure is termed as a pen. Unlike octopi, squids have two fins on their head, which help them to swim and most probably help them in coming to the surface of water quickly. Squids have eight arms that are sucker lined similarly to the octopi arms, but unlike octopus the squids possess hooks and sucker rings present on them. The squid also possesses two long tentacles on their front that are not present in the octopus. Squid, unlike octopus, use these two long tentacles to catch and kill its prey. Squid eat its food in chunks. Squid prefer to eat fishes and shrimp. Squids like to live in open water spaces and can be found in the surface layer of the ocean as well.
Octopus is cephalopod aquatic animals that live in the salty waters and temperate oceans. Octopus prefer to live in the dark deep dens in the oceans. Octopus does not have any shell in their body. They do not have fins and tentacles, unlike squids. Octopus has a round mantle head and eight arms that possess two rows of suckers on them. Octopus catch their prey with their arms and kill it by injecting venom into their body that paralyzes them. The average lifespan of an octopus is 1 to 3 years. Octopi normally range from 1cm to 5m in size.
