Natures Beautiful Wallpaper

8/21/12

Crocodiles Introduction And Beautiful But Dangerous Images Collection

Introduction Of Crocodiles:

A crocodile is any species belonging to the family Crocodylidae . The term can also be used more loosely to include all extant members of the order Crocodilia i.e. the true crocodiles, the alligators and caimans and the gharials as well as the Crocodylomorpha which include prehistoric crocodile relatives and ancestors.. They first appeared during the Eoceneepoch, about 55 million years ago.

Crocodiles eat meat or pretty much anything that will get close enough to the water to be dragged in. The adult usually eat snakes, buffalo, cattle, or anything else that gets near the water including humans.

Each crocodile jaw carries 24 sharp teeth meant to grasp and crush.Many times crocodiles stay on the river banks mouth wide open. That is not an aggressive posture but a way to cool off: they sweat through the mouth.The crocodiles have a four-chambered heart like in birds.Crocodiles have salt glands inside their mouths so they can stand sea water.Crocodile have pairs of shiny red dots. These are the crocodile's eyes which have a layer called tapetum. Behind their retina containing crystals that reflect light and make possible the night vision. A female lays 20to80 eggs which are incubated in a nest built from plant materials and defended by her for three months. A farmed crocodile reaches 1.5 m. in length in just one year.Crocodiles can swim just with the help of their powerful tail with 40 km. per hour and can stand underwater 2to3 hours..

Crocodiles can live up to 80 years.A mother crocodile can carry her young in a pouch inside her mouth.

Crocodiles have the ability to keep their eyes open under water.

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Crocodile Beautiful But Dangerous

Crocodile Beautiful But Dangerous

The Huge Crocodile

Crocodile Beautiful But Dangerous

Crocodiles

6/14/12

Octopus Dangerous Sea Animal Image Collection

About octopus:

Octopus is a cephalopod mollusc of the order Octopoda. Octopuses have two eyes and four pairs of arms.It like other cephalopods they are bilaterally symmetric. An octopus has a hard beak with its mouth at the center point of the arms. Octopuses have no internal or external skeleton, allowing them to squeeze through tight places. Octopuses are among the most intelligent and behaviorally flexible of all invertebrates.

The octopus inhabits many diverse regions of the ocean including coral reefs, pelagic waters and the ocean floor. There are around 300 recognized octopus species which is over one third of the total number of known cephalopod species. The term octopus may also be used to refer only to those creatures in the genus Octopus. A group of octopuses is called a consortium.

Octopus is a fast swimmers. And their soft bodies can squeeze into impossibly small cracks and crevices where predators can't follow.They also have beak like jaws that can deliver a nasty bite and venomous saliva used mainly for subduing prey.

Octopuses have three hearts. Two branchial hearts pump blood through each of the two gills while the third pumps blood through the body. Octopus blood contains the copper rich protein hemocyanin for transporting oxygen.

The common octopus is found in the tropical and temperate waters of the world’s oceans. They can grow to about 4.3 feet in length and weigh up to 22 pounds.

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