Squid

A:

Squids and octopuses are both head-footed cephalopods, but their behavior, habitat and physical characteristics are different. Both are blue-blooded aquatic animals, as their blood contains copper and has oxygen-carrying molecules, and they both move by jet propulsion and live in salty waters in temperate zones. They both squirt ink, but it's different colors. Squids produce blue-black ink while octopuses squirt black ink.

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  • What is more intelligent, a squid or an octopus?

    Q: What is more intelligent, a squid or an octopus?

    A: Squids and octopuses, both cephalopods, are the most intelligent known invertebrates. Direct comparison of squid and octopus intelligence is not feasible, as squid are much more difficult to keep in laboratories for study.
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  • What are the key similarities and differences between a squid and an octopus?

    Q: What are the key similarities and differences between a squid and an octopus?

    A: Squids and octopuses are both head-footed cephalopods, but their behavior, habitat and physical characteristics are different. Both are blue-blooded aquatic animals, as their blood contains copper and has oxygen-carrying molecules, and they both move by jet propulsion and live in salty waters in temperate zones. They both squirt ink, but it's different colors. Squids produce blue-black ink while octopuses squirt black ink.
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  • Is a squid a fish?

    Q: Is a squid a fish?

    A: Scientifically speaking, a squid is not a fish, but a mollusk. Mollusks are soft-bodied creatures that have gills in order to breath through.
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  • What is a devil squid?

    Q: What is a devil squid?

    A: The term "devil squid" is usually used in reference to the Humboldt squid, which has a reputation of being highly aggressive. They have attacked divers and been observed engaging in cannibalism.
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  • What is a group of squid called?

    Q: What is a group of squid called?

    A: A group of squid is called a shoal or squad; a group of giant squid is a school. Groups of squid are more easily viewed at sunrise and during twilight, according to New Hampshire Public Television.
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  • How many legs does a squid have?

    Q: How many legs does a squid have?

    A: Squid usually have two tentacles and eight arms that are also called legs. A giant squid's tentacles can be up to 10 meters long and the arms up to 3 meters long. The smallest squid is only 2.5 centimeters in length total.
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  • Is a squid a baby octopus?

    Q: Is a squid a baby octopus?

    A: The squid and the octopus are different animals, although they both belong to the molluscan class Cephalopoda and, as such, are related. One major difference between the squid and the octopus is the number of arms. Squid have 10 arms compared to the eight of the octopus.
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  • How do squid breathe?

    Q: How do squid breathe?

    A: Squid breathe by drawing water through their siphons into their mantles, the large muscular coverings over their bodies, where it passes over their two sets of gill filaments, absorbing oxygen and releasing carbon dioxide via diffusion. The blood that absorbs the oxygen uses a copper compound, haemocyanin, rather than the iron-containing hemoglobin of mammals. The blood is pumped to the gills from two branchial hearts and elsewhere by a third.
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  • What do small squid eat?

    Q: What do small squid eat?

    A: Very small squid eat plankton. As they grow larger, they hunt and eat other marine creatures. Common food sources for small squid include small fish, crabs and shrimp.
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  • What is the life span of a giant squid?

    Q: What is the life span of a giant squid?

    A: Scientists believe that giant squids live for less than five years. This estimate is based on study of giant squid remains washed up on beaches. Giant squids are thought to hatch from tiny eggs and grow at a tremendous rate to achieve their 60 foot long adult size.
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  • Q: Where do giant squids live?

    A: Giant squid live in every ocean on Earth but are particularly concentrated over the slopes leading up to continents and islands. They are rare in tropical and high polar regions. Giant squid live only in deep, cold water because their blood is incapable of carrying oxygen effectively at higher temperatures.
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  • Q: What do giant squid eat?

    A: Giant squid eat deep water fishes and other squid. They catch prey by using suckers and teeth on their feeding tentacles, bringing the prey into the beak using their eight arms. The food is broken into smaller pieces by the beak; teeth on the tongue-like organ, called the radula, grind it down further. The food travels through the esophagus, passing through the brain to get to the stomach.
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  • Q: What are characteristics of a Humboldt squid attack?

    A: Some scientists believe that Humboldt squids are more likely to attack divers who utilize reflective equipment or flashing lights, indicating an attraction of the squid toward this kind of phenomenon. Other scientists say that the Humboldt squid only attacks divers when it is in a feeding frenzy.
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  • What do squid eat?

    Q: What do squid eat?

    A: All squid are carnivores and eat mainly fish, shrimp, crabs and even other squid. They are ambush predators, often relying on stealth to sneak up on prey and capture it before it can escape.
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  • Q: What eats squid?

    A: The squid's natural predators include birds, fish, sharks and whales. Squid predators vary depending on their habitat. Squid that live near the surface of the water or in warm waters have an increased risk of being eaten, whereas squid that live in icy waters have fewer predators and mainly only have to be wary of sharks and whales. Most capable sea creatures feed on squid.
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  • Q: What is the most common giant squid habitat?

    A: Giant squids are found in the deep sea and have been photographed at depths around 3,000 feet. Scientists face challenges in studying giant squids and their habitats due to the extreme depth at which they are located. According to National Geographic, giant squids are found in all of the oceans.
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  • Q: How do squids protect themselves?

    A: Squids protect themselves with several techniques and biological mechanisms to blend in with the surrounding environment, counter oncoming threats and defend themselves in the event of an attack by a predator or rival. There are approximately 500 species of squid, and all rank high in intelligence among other invertebrate animals.
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  • What do squids eat?

    Q: What do squids eat?

    A: Squids are carnivorous predators that primarily prey on fish, crustaceans and other squid. Because squid vary greatly in size – some species are less than 1 inch in length, while others exceed 30 feet in length – their specific prey preferences differ markedly from one species to the next. Some squid hunt by chasing down their prey, while others hide and lie in wait for food to swim past them.
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  • What is a baby squid called?

    Q: What is a baby squid called?

    A: Like all cephalopods, squid start their lives as paralarvae. Unlike true larvae, paralarvae "are not morphologically distinct from adults," according to The Coral Digest. They are, instead, miniature versions of the mature species, though they "may occupy different ecological niches."
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  • Q: How does a squid move?

    A: A squid moves using a system of jet propulsion, pulling water into its mantle cavity, contracting the muscles of the mantle wall and expelling the water through its siphon or funnel. Its fins aid maneuverability and also help with lift and motion while the squid travels at slow speeds.
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  • What are the types of squids?

    Q: What are the types of squids?

    A: According to Squid-World, there are over 300 species of squid that have been identified. All of the identified squid are classified into one of two categories, either myopsida or oegopsida.
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