miércoles, 30 de septiembre de 2009


Dring my investigation I discover a web page that explain very well about this specie. (the web page is below).



The echinoderms are an edge of animals deuteróstomos exclusively marine and bentónicos. His name alludes to his exclusive internal skeleton formed for osículos calcareous. They possess symmetry pentarradial secondary, the only case in the animal kingdom, and a vascular aquiferous typical system.


martes, 29 de septiembre de 2009


The reptiles are animal vertebrates. It thinks that it does approximately 310 million years they descended from the amphibians. With the course of the time the mammals and the birds arose from the reptiles.
Seven thousand species of reptiles that live nowadays qualify in four basic groups. These groups are: Crocodiles -Lizards and Serpents -Tortoises -Tuátaras.



This speimen is characteristic by:

have a flattened, bilaterally symmetrical body. They have three embryonic layers (triploblastic): the endoderm, the mesoderm, and the ectoderm. this specie is more none as flat worms have no other body cavity than the digestive cavity (acoelomates).

For more information wacht this web side and

sábado, 26 de septiembre de 2009


Amphibians, such as frogs, toads, salamanders, newts, are ectothermic or cold-blooded animals that metamorphose from a juvenile water-breathing form, to an adult air-breathing form.


Cnidaria is a phylum containing over 9,000 species of animals found exclusively in aquatic, mostly marine, environments. Their bodies consist of mesoglea, a non-living jelly-like substance, sandwiched between two layers of epithelium that are mostly one cell thick.


A fish is any aquatic vertebrate animal that is typically ectodermic, covered with scales, and equipped with two sets of paired fins and several unpaired fins.


Sponges are animals of the phylum Porifera . Their bodies consist of jelly-like mesohyl sandwiched between two thin layers of cells.


Mammals are a class of vertebrate animals whose females are characterized by the possession of mammary glands while both males and females are characterized by sweatglands, hair, three middleairbones used in hearing, and a neocortex region in the brain. Mammals are divided into three main infraclass taxas depending how they are born. These taxas are: monotremes, marsupials and placentals.


Birds are winged, bipedal, endothermic, vertebrate animals that lay eggs. There are around 10,000 living species, making them the most numerous tetrapod vertebrates. They inhabit ecosystems across the globe, from the Arctic to the Antarctic. .


Arthropods are animals with segmented bodies and six or more jointed legs. They are the largest animal group on Earth.Arthropods are generally small. Most are less than 1 cm long. Most belong to one of three major groups: insects, crustaceans, or arachnids.

Coconut crab:
The coconut crab is the world’s largest terrestial arthropod in the world and is known for its ability to crack coconuts with its pincers. They can weigh up to 4kg (Some reports claim up to 17kg) and leg span of 1m.


The molluscs rival the arthropods in their diversity of body forms and sizes, as well as their ecological success. The phylum also provides some of the most familiar animals, such as snails , clams, mussels, squids , and octopus .


The giant squid remains largely a mystery to scientists despite being the biggest invertebrate on Earth. The largest of these elusive giants ever found measured 59 feet (18 meters) in length and weighed nearly a ton (900 kg).

jueves, 24 de septiembre de 2009