They live in oceans across the world but are most common in tropical waters. There are over three hundred fifty species of sharks. They can be broadly categorized into the following four groups:
Introduction to Sharks Sharks are a large group of fish that have inhabited the oceans for over million years, even before dinosaurs populated our planet.
They belong to the superorder Selachimorpha, and modern sharks have specific characteristics like a cartilaginous skeleton, five or six pairs of gills and several rows of teeth. Ancient Sharks lived before land vertebrates populated the Earth and even before many plant species developed on continents.
While they were very different from those found today, sharks have been on this planet for a long time. The shark species as we know them have been around for million years; this means that they were dwelling the oceans when dinosaurs were roaming the land.
This record-breaking survival cannot be anything but astonishing, developing an anatomy during this time which only has improved over those million years of evolution.
These unique animals cause all kind of human feelings: They have been widely represented in the popular culture as ruthless predators, which is the main reason why they cause all these different reactions.
However, the truth is pretty different. Sharks are complex and fascinating creatures, which are distant from the general representation.
Even more, many species are docile and harmless. Learning about the world of sharks, knowing their features, discovering their secrets, and recognizing their importance in our world is the first step to their conservation. When most people think about sharks, they have a mental picture of a deadly predator.
However, sharks are far more than this and play a vital role in the oceans and nature. Some shark fossils discovered date back as far as million years. Their evolution has produced several species with different sizes, anatomies, habits and behaviors. Their classification according to the features such as the fin types, spine, snout and body shape determine the genus and family of each species.
For example, the great white shark has the mouth behind its eyes and a large dorsal fin by the middle of its body and a second dorsal fin behind. An angel shark, on the other hand, has a couple of fins in the dorsal area near the tail and a flat nose with the mouth underneath.
The evolutionary features of sharks, not only defined their look but also the adaptations they have to survive in the wild.
There are three types of sharks according to the place they live which is closely related to the form and functions of their body. Some sharks dwell at the surface of the ocean and move slowly, other sharks inhabit the pelagic zone and have amazing swimming capabilities and some others stay at the seafloor, in the benthic zone, and move slowly searching for food on the sea floor.Animal Facts Animal Facts monkey Facts Fire-bellied toad Facts Blue marlin Facts Kouprey Facts Ocelot Facts Pelican Facts Pygmy marmoset Facts Tiger shark Facts Tuna Facts Warthog Facts Facts Przewalski's horse Facts Quoll Facts Sugar glider Facts Asian golden cat Facts Bay cat Facts Canada goose Facts Earthworm Facts Herring Facts.
Rhinoceros Facts Lion Facts Elephant Facts Giraffe Facts Flamingo Facts Chimpanzee Facts Penguin Facts Panda Facts Python Facts Great White Shark Facts Tiger Facts Skunk Facts Seal Facts Sea Turtle Facts Porcupine Facts Panther Facts Ostrich Facts Komodo Dragon Facts Hippopotamus Facts Tarantula Facts Piranhas Facts Orangutan Facts Octopus.
This following report will show you the classifications and information of the Jaguar, Tiger Shark, Earth Worm, Red Wood, and Killer webkandii.comryJaguarTiger SharkEarth WormRed WoodKiller webkandii.comm-AnimaliaAnimaliaAnimalia PlantaeAnimalia. “When official crime rates are plotted against age, the rates for both prevalence and incidence of offending appear highest during adolescence.
It's phylum is Chordata andit's class is Mammillia. It's order is Carnivora and it's family is the Felidae.
It's genus is Panthera and it's species; Taxonomy; This following report will show you the classifications and information of the Jaguar, Tiger Shark, Earth Worm, Red Wood, and Killer Whale.
Oct 10, · Killer Whale Introduction The killer whale (Orcinus orca), also referred to as the orca whale or orca, and less commonly as the blackfish, is a toothed whale belonging to the oceanic dolphin family. Killer whales are found in all oceans, from the frigid Arctic and Antarctic regions to tropical seas.