Posts tagged ‘Stream’

How does a spider spin its silk?

Spider

A spider spins its silk by releasing a liquid through its spinnerets.  The liquid hardens into a silk thread as soon as it touches the air.

Spiders are small, eight-legged animals that are best known for the silken webs they spin.

Spiders have spinning organs called spinnerets on the underside of their stomachs.  Through the spinnerets, spiders release a liquid that hardens to silk as soon as it touches the air.

The spider cannot force the silk from its silk glands in a stream.  When it is spinning a web it pulls the silk from the spinnerets with a hind leg.

Spiders use their silk in many ways.  Some spin webs to catch insects for fond.  They also line their retreats and nests with it.

Most spiders enclose their eggs in a protective eggs sac, or cocoon of silk.  The newly hatched spider lings may migrate to new homes by spinning silken, gossamer threads carried by the wind.

The spider traits a dragline wherever, it goes.  It can swing down to the ground from high places or swing out of reach of any enemy.  – Dick Rogers

What is a crayfish?

Crayfish

Crayfish are small fresh-water shell fish that look like miniature lobsters.

If you have ever played by the bank of stream or pond, you may have seen a small animal that looked like a miniature lobster living at the bottom of the water near the shore.

What you saw was a fresh water shell like known as a crayfish. It is easy to see that the crayfish, sometimes called crawfish or crawdad, and the saltwater lobster are close relatives.

Both have 10 legs.  The front legs end in large pincers. These pincers are used to catch any prey that comes near,  as well as for defense.  The four other pairs of legs are used for walking.

The crayfish escapes from danger by swimming backward through the water with quick flips of its fan-like tail.  Like the lobster, the crayfish hatches from an egg.  A hard shell covers its soft body like a suit of armor.

Several times before it is fully grown, the crayfish must shed its outgrown shell and grow a new and larger one. – Dick Rogers

What is a snapping turtle?

Snapping Turtle

The common snapping turtle of North America is a large bad tempered turtle having a powerful jaws which snap with great forces.  This tells us how the snapping turtle gets its name.

Snapping turtles live in muddy streams and swampy ponds.  A full-grown “snapper” may weigh 30 pounds and have a shell a foot long.

It may look clumsy, but it can move quickly on land and can make short leaps on its strong legs to snaps its food.

When this turtle is attacked, it snaps with lightning speed, its strong, sharp-edged jaws can inflict dangerous bites.

A close relative of a common snapper is the big alligator snapping turtles that lives in the rivers of the gulf states.  They are the biggest snappers of all.

A big one can weigh 140 pounds or more.  A snapping turtles shell can be 2 feet long and is covered with rows of bumps, much like the skin of a real alligator. – Dick Rogers