Posts tagged ‘Under Water’

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

What is a sea cow?

Sea cow are large water animals that look somewhat like seals.  “Sea cow” is the popular name for the manatee and dugong, which are sea animals that look somewhat like a large seals.

The sea cow is an awkward, slow-moving animal with no hind legs.  Its front legs are paddle-shaped and it has a broad, shovel-like tail.

A very large sea cow would weigh more than 1,500 pounds.   Sea cows prefer to live quietly in warm, shallow bays and coastal waters, and in certain large rivers.

Sea Cow

They feed on water plants growing in the shallow water, and are often seen in small herds, browsing like real cattle grazing.

Since they are mammals, they must hold their breath under water, and come to the surface often to breathe.

The mother sea cow feeds her baby mild.  The baby called a calf, is born under water.

The mother pushes her newborn infant to the surface for its first breath of air.  She carries the little animal on her back so that it is above water, then dunks it repeatedly until it learns to breathe correctly.  – Dick Rogers