Question

Speech on life of sea animals .

Answer 1

Answer:

At a fundamental level, marine life helps determine the very nature of our planet. Marine organisms produce much of the oxygen we breathe. ... Marine vertebrates must obtain oxygen to survive, and they do so in various ways. Fish have gills instead of lungs, although some species of fish, such as the lungfish, have both.

Answer 2

Explanation:

Ocean life is popularly known as marine life. It is a perfect blend of animals, plants and other water species that exist in the sea water or brackish water of some coastal estuaries. The marine life is used for determining the nature of the planet. Most significantly, they produce more oxygen content you breathe.