Sharks

A:

The nurse shark has thousands of small notched teeth. The jaws of the nurse shark are powerful and are used to crush hard prey, including shellfish. Fish, shrimp and squid compose the other portions of the nurse shark's diet.

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  • Why are sharks afraid of dolphins?

    Q: Why are sharks afraid of dolphins?

    A: Sharks actually attack dolphins on occasion, but sharks are wary of them because dolphins have excellent detection skills in the water, are highly intelligent, attack in groups and occasionally protect other mammals including humans even if they aren’t part of the dolphin’s pod. According to Sharks-World, sharks aren’t so much afraid of dolphins as they are confused by the sounds that dolphins make.
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  • What do great white sharks eat?

    Q: What do great white sharks eat?

    A: Great white sharks are carnivores that eat seabirds, sea turtles, fish, squid, certain cetaceans (such as dolphins, porpoises and whales), and especially sea lions and seals. Great whites are occasionally observed eating the carcasses of dead whales.
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  • Can sharks live in freshwater?

    Q: Can sharks live in freshwater?

    A: Most sharks are not physiologically capable of living in freshwater, although the bull shark is an exception. In order to live in freshwater, the body of water would need to be wide and deep enough to accommodate the shark, and it would have to be connected to the ocean for the shark to get there in the first place.
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  • What do sharks look like?

    Q: What do sharks look like?

    A: There are 465 known species of sharks that display different physical characteristics. Most are identifiable by their darker upper sides that blend with the water above and their white or lighter-colored undersides that blend with the sea below, in addition to their fins, side gill slits and rows of sharp teeth. Shark skeletons are composed of cartilage, a light and flexible tissue.
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  • What is the symbiosis between remoras and sharks?

    Q: What is the symbiosis between remoras and sharks?

    A: Most scientists classify the relationship between the shark and the remora as a commensalit relationship, because the remora benefits from the transportation and food that the shark provides, while the shark does not seem to be harmed. However, there are some scientists who believe that the remora are irritating to sharks, and others who believe the relationship is symbiotic.
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  • How fast can a great white shark swim?

    Q: How fast can a great white shark swim?

    A: Because of its highly streamlined shape and powerful swimming muscles, a great white shark can swim up to 35 miles per hour in short bursts. In addition to its ability to swim in short bursts, a great white can also move at a steady cruising speed. Scientists recorded one great white that swam a total of 12,400 miles in nine months, an average of 45 miles each day.
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  • What are the Great White Shark behavioral adaptations?

    Q: What are the Great White Shark behavioral adaptations?

    A: To survive, great white sharks have evolved several behavioral adaptations, including flexible activity patterns, migratory habits and social hierarchies. However, great white sharks are also intelligent hunters, and their most important adaptation is their use of different strategies for different prey. Great whites are not commonly kept in captivity; so many aspects of their behavior remain unknown, as it is difficult to study them in the wild.
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  • Why do great white shark attacks happen?

    Q: Why do great white shark attacks happen?

    A: Over the years, experts have been trying to determine exactly why great white sharks attack humans. Three of the main theories include the investigatory theory, mistaken identity theory and social-defensive theory.
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  • What is a baby shark called?

    Q: What is a baby shark called?

    A: A baby shark is referred to as a pup. Sharks are born in three different ways. Sharks lay eggs that then hatch, carry eggs that hatch inside them or grow pups inside them.
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  • Is a shark a mammal?

    Q: Is a shark a mammal?

    A: A shark is not considered a mammal. Sharks are considered members of the paraphyletic group of organisms that contain gills, or in other words, fish.
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  • How long does a great white shark live?

    Q: How long does a great white shark live?

    A: Great white sharks have a lifespan of 30 to over 100 years. Great whites can be found in all major oceans and are well known for their large size. Some reach lengths of over 20 feet.
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  • What is the name of a baby shark?

    Q: What is the name of a baby shark?

    A: A baby shark is called a pup. A female shark can produce between one and 100 pups at a time, depending on the type of shark.
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  • What eats a great white shark?

    Q: What eats a great white shark?

    A: The great white shark is an apex predator, and as such, healthy adults of the species have no natural predators. Only one real threat faces the great white shark: humans that accidentally catch them, illegally poach them, pollute the waters they live in or lay nets along coastlines that may entrap them.
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  • How big is a newborn shark?

    Q: How big is a newborn shark?

    A: Newborn shark sizes vary by shark species; for example, a newborn great white is typically about 4 feet long, while blacktip reef shark newborns are considerably smaller, usually more than 20 inches in length. Whale sharks, which are quite large in adulthood, give birth to live pups rather than laying eggs, and these newborn pups are typically about a foot and a half long, or 21 to 25 inches in length. Growth rates subsequent to birth may also vary by species.
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  • How long do sharks live?

    Q: How long do sharks live?

    A: According to PBS, the average life span of a shark is 25 years. Life expectancy can vary among shark species. Sharks tend to live much longer in the wild than in captivity.
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  • Where do hammerhead sharks live?

    Q: Where do hammerhead sharks live?

    A: The hammerhead shark is found worldwide in tropical and warm coastal waters and near continental shelves. They may also be found in the adjacent coral reefs, lagoons and surrounding deep waters.
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  • Are sharks blind?

    Q: Are sharks blind?

    A: Sharks have the ability to see, but they cannot see colors. Dolphins, whales and other aquatic animals are also color-blind. Marine animals' survival is not dependant on the ability to see color, but rather the ability to see contrast in colors.
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  • What does the great white shark eat?

    Q: What does the great white shark eat?

    A: Great white sharks eat mainly seals and sea lions. They also eat other types of fish and even sea turtles. Seals are a good source for great white sharks due to their large body fat ratios.
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  • What eats a shark?

    Q: What eats a shark?

    A: Though sharks are considered apex predators, they are often eaten by humans and are sometimes eaten by killer whales. Shark embryos from different fathers will also eat each other in utero, with the largest embryo of the bunch usually winning out.
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  • Why are sharks important?

    Q: Why are sharks important?

    A: According to Shark Savers, sharks are important because of the role they play in the oceans. Sharks have a positive effect on food webs, ocean populations and habitat health.
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  • What are some interesting megalodon facts?

    Q: What are some interesting megalodon facts?

    A: The megalodon was a prehistoric shark species that went extinct at least 1.5 million years ago; the reasons the giant predators disappeared remain a mystery. Megalodons were not only the largest sharks to have ever lived, they were also the largest marine predator to ever swim the world���s oceans. While some propose that the sharks may still swim the world���s oceans, most scientists agree they are extinct.
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