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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  • 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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  • 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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  • 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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  • 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 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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  • 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 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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  • 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 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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  • 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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  • 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 are the predators of the Dumbo octopus?

    A: The main predators of the Dumbo octopus are killer whales and sharks. Because Dumbo octopuses spend most of their lives at great depths, the species does not have many predators.
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  • Q: What animals eat octopi?

    A: Predators of the octopus include eels, dolphins and sharks, among others. Octopi have many means of deterring predators, including the ability to detach an arm if it is in a predator's grasp and ink glands to release clouds of black ink and block the view of attackers. An octopus can also deliver venomous saliva by biting its prey.
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  • Q: Where is an octopus's mouth?

    A: The mouth of an octopus is located on the lower side of its head. The mouth is shaped like a beak and conceals a toothed tongue called a radula, which is used for scraping and shearing food. The bite of an octopus can be dangerous due to its venomous saliva.
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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 does the Dumbo octopus live?

    A: The Dumbo octopus lives in ocean areas around New Zealand and Austrailia, in the Monterey Bay in California, in the waters around Oregon and the Philippines, as well as in Pupua, New Guinea. It was named for its similarity to Dumbo, the flying elephant featured in a Disney movie.
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  • Q: What creatures are enemies of the octopus?

    A: Some enemies of the octopus include eels, sharks, halibut, ling cod and dolphins. The octopus uses camouflage to protect itself from predators, which allows it to hide in plain sight. It also releases a cloud of black smoke to cover its escape if it is attacked by an enemy.
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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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  • 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: 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: 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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