Snail. Mollusks Invertebrates Animal Kingdom. Wildlife. Fauna. Zoology.

The snail belongs to the class of gasteropods, which are mollusks with an asymmetrical body, and, almost always, bearers of a dorsal shell with a spiral twist that curls on itself 180º to the right where the visceral mass.

Snails have a radula mouth, which is a scraping organ with chitinous teeth that they use to scrape vegetables and even rocks.

The foot is well developed and the skin is rich in glands that secrete mucus that, in land snails, facilitates movement.
Both the head and the foot can be introduced into the shell under unfavorable conditions.

Reproduction

Terrestrial gastropods are hermaphroditic, but when two of them mate, they both fertilize each other with their sperm.

Then they dig a rather deep hole in moist soil and lay the eggs, covering it later.

Displacement

The snails have the foot consisting of very robust and elastic muscles.
The snail seems to slide over the secreted mucus and can even climb the edge of a razor blade without any damage.
In the winter season the snails remain hidden and are enclosed in their shell covering the opening with a layer of mucus that hardens forming a lid.

Some snail species and slugs

Caracoles terrestres

En esta fotografía se pueden ver distintos tipos de caracoles terrestres corrientes en un jardin de Zaragoza.

Copyright 1996-2005 © All Rights Reserved Javier Mendivil Navarro, Aragon.

Helix Aspersa
• Otala punctata
• Cernuella cespitun
• Cernuella virgata
• Theba pisana.
• Jaminia quadridens
• Cochlicella barbara
• Rumina decollata

Freshwater snails:

Species of mollusks in the Imperial Canal of Aragon as it passes through Zaragoza:

• Theodoxus fluviatilis
• Ancylus fluviatilis
• Physella acuta
• Radix ovata
• Bythinia tentaculata
• Potamopyrgus antipodarum

According Ramon M. Albarez-Halcon.

Limnea


Caracol rueda: Planorbis

Melania bastula
Limnea auriculata

More information about snails

• LBM: http://www.visualcom.es/lbm/caracol00.htm.
• Gualterianus: http://www.gualtierianus.com.
• Malakos: http://www.malakos.org/.



Other information about Molluscs

• Introduction
• Monoplacophores
• Poliplacophores
• Scaphopods
• Gastropods
  • Slugs or Limacos
  • Snails
• Bivalves or lamelibranchs
  • Freshwater clams
  • Margaritone (Margaritifera auricularia)
  • Zebra mussel (Dressenia polymorpha)
• Cephalopods



Other information about fauna in Aragón:

A small list of species in Aragon would be the following:

Vertebrates	Invertebrates
Mammals Red squirrel. Bear. Fox. Artiodactyl Ungulates Deer. Wild pig. Birds Classification of Birds Storks. Capercaillies. Reptiles Amphibians Urodelos.    Marbled Triton.    Webbed Triton.    Pyrenean triton. Anurans. Fishes	Metazoans Arthropods Myriapods Insects Arachnids Spiders Crustaceans Annelids Worm Molluscs Asquelmintos Platelmintos Celentereos Porifera Protozoa
images about the fauna in Aragon.    photographs on invertebrates.    beneficial animals for agriculture.



Also Aragon enjoys a diverse and varied Nature where passing by plants, animals, Geology, or landscapes we can arrive at a fantastic bestiary that lives in its monuments.

The information will not be complete without a stroll by its three provinces, with shutdown in some of its spectacular landscapes like Ordesa, the Moncayo, Monegros or by opposition the Ebro.

Also you can dedicarte to the intangible ones: from the legend compilation that also does to universal Aragon.