Octopi

A:

The octopus is just one of many creatures that has three hearts. Most cephalopods have three hearts and blue blood.

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  • What color is an octopus?

    Q: What color is an octopus?

    A: An octopus' coloration depends upon its surroundings. An octopus possesses the ability to alter its coloration depending on its immediate environment. This defensive technique protects the animal from predators and entices prey to come close to the animal.
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  • What is an Octopus' phylum?

    Q: What is an Octopus' phylum?

    A: The octopus belongs to the phylum Mollusca in the Animalia kingdom. The phylum contains a large number of aquatic life forms in addition to the octopus, such as squid, mussels and oysters.
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  • Do octopuses have teeth?

    Q: Do octopuses have teeth?

    A: Octopuses have many rows of small teeth called denticles, which are located on the ribbon-like structure known as the radula. The radula is located within the octopus's mouth and is used for drilling shells and cutting flesh. Octopuses have a pair of beaks that also assist in ingesting prey.
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  • Which animal has three hearts?

    Q: Which animal has three hearts?

    A: The octopus is just one of many creatures that has three hearts. Most cephalopods have three hearts and blue blood.
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  • What is a baby octopus called?

    Q: What is a baby octopus called?

    A: Upon hatching, a baby octopus is referred to as "larva." After making their way to the ocean's surface, the larvae remain there for one to three months. They are defenseless at this point, and many become food for predators.
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  • How many legs does an octopus have?

    Q: How many legs does an octopus have?

    A: An octopus has eight legs, but they are more commonly referred to as tentacles. The name "octopus" is directly derived from the prefix "oct-" which means eight and is found in other words such as "octagon."
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  • Where do octopus live?

    Q: Where do octopus live?

    A: The octopus inhabits all oceans in depths that vary from 3 miles to more shallow waters along shorelines. They prefer to live in protected areas along the ocean floor such as coral reefs and rocky crevices.
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  • What is the average size of an octopus?

    Q: What is the average size of an octopus?

    A: 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.
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  • How many brains does an octopus have ?

    Q: How many brains does an octopus have ?

    A: Octopuses only have one true brain, which is located in their head, wrapped around their esophagus. However, octopuses have other neurons, the cells that form the brain, in other places as well. Octopuses have large numbers of neurons located near their eyes and others inside their arms.
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  • What do octopuses eat?

    Q: What do octopuses eat?

    A: According to National Geographic, the common octopus preys on crabs, crayfish and molluscs. Bottom-dwelling octopuses feed mainly on polychaete worms, crabs, whelks and clams. Open-ocean octopuses subsist on prawns, fish and other cephalopods. The giant Pacific octopus feeds on shrimp, clams, lobsters and fish, and even larger prey, such as sharks and birds.
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  • What is a group of octopus called?

    Q: What is a group of octopus called?

    A: There is no term for a group of octopus, as the mollusks are solitary, according to the Vancouver Aquarium. While some species of squid, another type of mollusk, live in schools when young, the octopus lives alone in underwater dens its entire life.
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  • Q: What eats the dumbo octopus?

    A: Sharks, killer whales and tuna are the main eaters of the dumbo octopus. Since it spends much of its life at depths ranging from 1,300 feet to more than 20,000 feet, the octopus does not have many predators.
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  • Q: What does an octopus eat?

    A: The octopus mainly eats crabs and other shelled invertebrates, though they do eat fish and small sharks as well. The fact that they eat crabs primarily is the reason why an octopus has a beak.
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  • Q: What are some octopus fun facts?

    A: The octopus inhabits the water along several coastal regions in temperate, subtropical and tropical areas, including alongside the western coast of Africa, the Gulf of Mexico and India. The creature is part of the mollusk family and is related to the squid. As an invertebrate, it has no skeletal structure.
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  • Q: What animal eats the blue-ringed octopus?

    A: Predators of the blue-ringed octopus include gropers, moray eels, sharks and snappers. At just 5 to 7 inches in size, the species is an easy target for these larger fish that share its territory.
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  • Q: How does an octopus move?

    A: An octopus uses several methods to move through the ocean. An octopus in a hurry uses jet propulsion by rapidly contracting its water-filled mantle, the muscular sac that encloses its gills and body organs. The contracting mantle forces water rapidly through a funnel at its base, propelling the octopus in the opposite direction. Slower movement is achieved by using all eight limbs to maneuver along the sea bottom or around obstacles.
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  • Q: Where can I buy a live octopus?

    A: A live octopus can be bought both in aquarium stores and ordered online to be delivered through the mail. Depending on whether you are hobbyist or a scientist, you can buy an octopus from various suppliers. Certain sellers only carry certain species of octopus, as well.
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  • Q: What preys on octopi?

    A: Octopusus are preyed on by eels, dolphins, sharks and other large fish. Octopusus have a number of ways to prevent themselves from being eaten by these predators with the most noteworthy being the ability to camouflage itself quickly with the surrounding environment when a threat is imminent.
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  • Is an octopus a fish?

    Q: Is an octopus a fish?

    A: Though it breathes through gills, the octopus is not a fish but a cephalopod marine mollusk. Also, unlike a fish, an octopus is an invertebrate, which means it doesn't have a backbone. It also has three hearts.
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  • Why do octopuses have eight legs?

    Q: Why do octopuses have eight legs?

    A: Octopuses evolved, most likely, from early gastropods and evolved arms and legs from what used to be funnels, their horn-shaped shells, and then grew an extra pair of arms for hunting, according to Sea Friends. It's not true that octopuses have eight legs; they actually have six legs and two arms.
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  • Q: How big is an octopus?

    A: The common octopus, the most widely researched octopus species, reaches up to approximately 39 inches in length and weighs as much as 25 pounds, according to Arkive. Other species are significantly different in size, ranging from about half an inch (octopus wolfi) to more than 14 feet (Pacific octopus).
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