Agriculture
Watching out for vultures
Making the most of a meal
Treating peanut allergy bit by bit
Amphibians
Poison Dart Frogs
Frogs and Toads
Bullfrogs
Animals
Eyes on the Depths
Missing Moose
Copybees
Behavior
Baby Talk
Babies Prove Sound Learners
Fighting fat with fat
Birds
Eagles
Seagulls
Swans
Chemistry and Materials
A Framework for Growing Bone
The Buzz about Caffeine
Screaming for Ice Cream
Computers
The science of disappearing
It's a Small E-mail World After All
Programming with Alice
Dinosaurs and Fossils
A Dino King's Ancestor
An Ancient Spider's Web
Some Dinos Dined on Grass
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Earth
Ice Age Melting and Rising Seas
Coral Gardens
Getting the dirt on carbon
Environment
Groundwater and the Water Cycle
A Change in Leaf Color
Swimming with Sharks and Stingrays
Finding the Past
Oldest Writing in the New World
A Big Discovery about Little People
A Volcano's Deadly Ash
Fish
Goldfish
Tiger Sharks
A Jellyfish's Blurry View
Food and Nutrition
A Pepper Part that Burns Fat
Chew for Health
Packing Fat
GSAT English Rules
Finding Subjects and Verbs
Adjectives and Adverbs
Who vs. That vs. Which
GSAT Exam Preparation Jamaica
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Scholarship
How are students placed after passing the GSAT exam
GSAT Exams Jamaica Scholarships
GSAT Exam Preparation
2014 GSAT Results for Jamaican Kids
42,000 students will sit for the GSAT Exam in two weeks
GSAT Mathematics
Setting a Prime Number Record
How a Venus Flytrap Snaps Shut
Math and our number sense: PassGSAT.com
Human Body
A Sour Taste in Your Mouth
Music in the Brain
Foul Play?
Invertebrates
Tarantula
Jellyfish
Arachnids
Mammals
Foxes
Marsupials
Porcupines
Parents
The Surprising Meaning and Benefits of Nursery Rhymes
How children learn
What Not to Say to Emerging Readers
Physics
Thinner Air, Less Splatter
Spin, Splat, and Scramble
The Mirror Universe of Antimatter
Plants
When Fungi and Algae Marry
Fungus Hunt
Flower family knows its roots
Reptiles
Komodo Dragons
Geckos
Pythons
Space and Astronomy
Pluto's New Moons
Holes in Martian moon mystery
Planets on the Edge
Technology and Engineering
Beyond Bar Codes
Smart Windows
Switchable Lenses Improve Vision
The Parts of Speech
Countable and Uncountable Nouns
What is a Verb?
What is a Noun
Transportation
Seen on the Science Fair Scene
Reach for the Sky
Robots on a Rocky Road
Weather
Where rivers run uphill
Watering the Air
Catching Some Rays
Add your Article

Snails

The name snail applies to most members of the molluscan class Gastropoda that have coiled shells .These snails are of herbivorous nature. Other gastropods, which lack a conspicuous shell, are commonly called slugs, and are scattered throughout groups that primarily include snails. Snails are found in freshwater, marine, and terrestrial environments. While most people are familiar with only terrestrial snails, the majority of snails are not terrestrial. Snails with lungs belong to the group Pulmonata, while those with gills form a paraphyletic group. Stretching snails: Snails move like earthworms by alternating body contractions with stretching, with a proverbially low speed. They produce mucus in order to aid locomotion by reducing friction. The mucus also reduces the snail's risk of injury and helps keep away potentially dangerous insects like ants. When retracted into their shells, snails secrete a special type of mucus which dries to cover the entrance of their shells with a 'trapdoor' like structure called an operculum. This is similar to some slug species which build a shell-like object below their upper skin to prevent drying out. The operculum of some snails has a pleasant scent when burned, so it is sometimes used as an ingredient in incense. Shell hibernation: In winter or in dry seasons, some snail species hibernate in their shells by building the operculum, which is for protection while hibernating and which is destroyed in spring or when their surroundings becomes wetter. Some species gather and hibernate in groups while others bury themselves before hibernating. All shapes and sizes: Snails come in a range of sizes. The largest land snail is the Giant African Snail (Achatina achatina; Family Achatinidae), which can measure up to 30 cm. Pomacea maculata (Family Ampullariidae), or Giant Apple Snail is the largest freshwater snail, with its size reaching 15 cm diameter and over 600 g weight. The biggest of all snails is Syrinx aruanus, a marine species living in Australia. Snail grows=shell grows: As the snail grows, so do their shells. A snail will close off a section of its shell and add a new chamber as it grows, each chamber being larger than the previous one by a constant factor. As a result, the shells forms a logarithmic spiral. At some point, the snail builds a lip around the opening of the shell, stops growing, and begins reproducing. Calcium-essential to a healthy diet: Snail shells and egg casings are made up of primarily calcium carbonate like other mollusk's shells. Because of this, they require a decent amount of calcium in their diet and watery environment to produce a strong shell. A lack of calcium, or a fluctuation in pH level in their surroundings, would likely cause their shells to be thin, crack, or have holes. Usually a snail can repair its shell damage over time if their living conditions improve, but some damage could be severe enough to be fatal for the snail. Snails hibernate during the winter (typically October through April). They may also hibernate in the summer in drought conditions when it is known as aestivation. Hemaphrodites: Some snails are hermaphrodites, producing both spermatozoa and ova. Others, such as Apple Snails, are either male or female. Prolific breeders, snails in pairs inseminate each other to internally fertilize their ova. Each brood may consist of up to 100 eggs. Many predators: Snails have many natural predators, including decollate snails, ground beetles, snakes, toads, turtles, and birds like chickens, ducks and geese, and even a predatory caterpillar. Danger- humans!! Humans also pose great dangers to snails. Besides the obvious threat of stepping on them or putting salt on the fleshy body part, water pollution and acid rain destroy their shells and poison them, causing many species of snails to become extinct. In addition, snails are used as human food (often known as escargot) in Europe, Asia and Africa.

Snails
Snails








Designed and Powered by HBJamaica.com™