Underwater Animals. Snapshot Picture Library

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      UNDERWATER

       ANIMALS

      From shallow coral reefs

       to deep murky trenches,

       the ocean offers an

       underwater realm that’s

       home to remarkable

       creatures and plants.

      Even more amazing are the

       ocean’s forests of plankton

       made up of tiny plants—

      that produce half the oxygen

       we breathe—and animals.

      The ocean covers nearly

       three-fourths of our planet’s

       surface. Maybe we should

       really call it Planet Ocean!

Underwater animals come in all shapes and sizes.