A population map is used to represent the overall distribution of population within a particular area. Most maps represent the varying population data using color, while other population maps use symbols, such as circles or stars.
There are approximately 470 known species of shark in the world, but it's impossible to count the exact number of individual sharks on the planet. World Wildlife Fund estimates that more than 100 million sharks are killed each year for their fins.
A great white shark, or Carcharodon carcharias, is a large shark that inhabits the coastal waters of all oceans. It is the largest macro-predatory fish on Earth.
Sharks move through the water with the help of their tail fins. The body of a shark is light as it is made of cartilage and not bones. It has a perfectly streamlined body. Its dorsal fins help it steer through the water.
Sharks are fish, but they belong to the group called Chondrichthyes, or cartilaginous fish, which is a different scientific group than most types of fish. Common fish, such as tuna or salmon, all belong to the group Osteichthyes. The distinction is based upon the makeup of their skeletons.
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.
Sharks are at the top of their respective food chain and are not usually hunted by other animals; however, sharks have been known to eat other sharks from time to time. There have also been a few sightings of moray eels eating small sharks.
Sharks do not have a specific name for the different sexes. Baby sharks are called pups
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.
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.