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It is mostely found in the oceans surface waters; algae only grows where sunlight can provide energy for it. Most algae occur within the first 50 or so feet of water.
brown algae
surface
found 1 meter below the surface on cloudy days. The study concluded that sunlight penetration was the main factor affecting the depth distribution of the algae.
Algae do not necessarily have to float on top of the water. Some species of algae have adapted to their environment and actually live underwater so they do not have the risk of drying out. The surface algae though floats because it is not very dense (tightly packed) so it has air bubbles that allows it to float.
You don't find any algae growing much deeper than 60 feet (20 meters) because the light that is necessary for their growth is filtered out by the water. Algae, therefore, is found only near the surface.
Ctenophores are found in most marine environments: from polar waters to the tropics; near coasts and in mid-ocean; from the surface waters to the ocean depths.
they are made from skeletons so maybe they float or somethin'
Golden Brown Algae is mostly found in saltwater and some are found in freshwater
Yes, there are waters found on Mercury.
No, algae are not harmful unless it dies. (Found this answer on Yahoo.com)
It's spelled 'Spirogyra' and it is a genus of green algae. It is found mostly in freshwater and there are approximately 400 species around the world. They are in the Protista kingdom. They are found mostly in polluted waters, most commonly mistaken for pond scum.