Octopi

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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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  • 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 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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  • 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 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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  • 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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  • 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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  • 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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  • Q: How many eyes does an octopus have?

    A: An octopus has two eyes, which have a very similar structure to human eyes. An octopus' eye contains a retina, cornea, iris and lens, which provide the octopus with excellent vision, especially for an invertebrate.
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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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  • 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: 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: 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: 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: How does an octopus reproduce?

    A: Female octopuses reproduce by first fertilizing their eggs with the sperm from a male and then depositing and caring for her eggs. The young octopuses, however, must care for themselves. They must secure food and avoid predators in order to grow, mature and eventually reproduce themselves.
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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 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 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 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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