Discover Nature NotesMore posts

The Creature with a Mobile Home

Mar 19, 2018

It is a familiar creature that constantly moves but is always home.  It has a mouth on the bottom of its foot.  It has a foot but no leg.  The animal leaves a trail wherever it goes.  What is it?  It’s a snail, of course!
Snails are common and unusual.  Common, because we all recognize snails when we see them, and unusual, because, in spite of their familiarity, most people know little about them.  Snails are ancient creatures.  As a group, they’ve been so successful that very few habitats, on land, in water, or near it, lack snails.
Snail design is basic: a large muscular body, or foot, with attachments.  Everything is connected to the foot.  The head and antennae are in front, the tail is out behind, and the shell is on top.  The shell has a good deal to do with the success of snails.  Snails retract the muscular foot, along with all the other essential body parts, into the shell for protection.  Their shells give them cover against environmental extremes like heat and dryness, or from predators.
A snail moves slowly and won’t outrun a bird or shrew or hungry ground beetle.  But it can hide in its shell and make its soft, fleshy body as unavailable as possible. Material Sourced from former MDC biologist, Dennis Figg.

Snail Mail

  • Most freshwater snails graze on plant material, or sometimes, scavenge on dead animals.
  • It is common to see gilled pond snails gliding about on submerged rocks; each one is scraping algae from the surface using a minute mouthpart called a radula, often described as a “rasping tongue.”
  • If you collect pond water in a jar and place pond snails into it, you will soon be able to see these mouthparts as the snails attempt to forage on the glass.
  • Aquatic snails play an intermediate role in aquatic food chains, eating plants and then becoming food for something larger. Several types of fishes have specialized throat teeth for cracking snail shells. Some birds and other animals eat snails, too.

For more about snails, visit the MDC’s Field Guide.

 

MO DOC-2018-DNN Mar Wk 4 Snails-MODC1803-LF04.mp3

Discover Nature Notes Radio
The Creature with a Mobile Home

Snail Hits Predator with Its Shell | National Geographic

Watch snails defend theirselves in this National Geographic Video
Watch snails defend theirselves in this National Geographic Video

land snail - 6.jpg

Land Snail
Land Snail

sharp_hornsnail_8-10-15.jpg

Sharp Hornsnail
Sharp Hornsnail

Recent Posts

American wigeon male

Three Dabblers

Oct 22, 2018

ARE YOU A DABBLER OR A DIVER:  Do you like to skim along the surface or go deep?  Learn the differences between dabbling ducks and diving ducks and how you can look for three dabblers winging their way through Missouri in this week's Discover Nature Note blog. 

The Sounds of Fall

Oct 15, 2018

THE SOUNDS OF FALL:  Fall is a sensory delight.  And not just for the eyes and nose.  The sounds of fall are as distinct as its sights and smells.  Explore the many sounds of fall and places to go to hear them in this week's Discover Nature Note.

Woolly Bear Caterpillar

Woolly Bears and Winter

Oct 08, 2018

WOOLLY BEAR MYTHS AND FACTS:  These fuzzy caterpillars are out crossing roads now.  Why do they do that and can they really predict weather?  Explore fun facts about them and learn what they turn into in this week's Discover Nature Notes blog.

Archive

Field Guide

Discovering nature from A-Z is one click away

Recipes

You had fun hunting, catching or gathering your quarry—now have more fun cooking and eating it.
Check out the recipes