Posts tagged ‘Tadpole’

How do frogs stay under water so long?

When under water, a frog takes in oxygen through its skin.  When a frog dives under water, he does not come to the  surface as quickly as you have to when you dive.  Why not?

Frog swimming underwater

The frog, of course, cannot breathe under water, as it did when it was a tadpole.  When a frog is on the bank or pond, it breathes with its lungs, which are somewhat like your lungs.

There is always some air mixed with water in the pond.  When the frog is under water, it can take a little of the air it needs through its skin.

This explains why the frog can stay under water all winter.

If you live where the winters are cold, you’ve probably noticed that the frogs seem to disappear when cold weather comes.

Many frogs dive into ponds and bury themselves in the muddy bottom, and quickly fall asleep.  Sleeping all winter is called “hibernation.”

While the frog is sleeping, its body keeps so still that it can get along without any fresh air until it wakes in the spring.  During its winter sleep, the frog lives on the food stored in its fat body.  – Dick Rogers

Did you know that a tadpole becomes a frog?

The common pond frog’s life begins in a quiet pond as one of many jelly-like eggs laid together in a mass by the mother frog.

In a few days, the egg hatched into a tiny, legless tadpole that breathes with gills, as fish do.  it has a long tail which it uses for swimming, and eat plants that grow in the water.

Tadpole-to-frog

As the tadpole grows, first two hind legs and then two front legs appears.  After a time the tail begins to shrink and the tadpole loses its gills and gets lungs instead.

Then the tadpole comes to the surfaces of the water to breath air.

At last its tail disappears and the change is complete.

As a young frog, the creature is now ready to leave the water and begin a life as a hoping land animal.

Most tadpole make the change into frogs in the three months of spring.  Most toads begin life a tadpole, much like frogs do. – Dick Rogers