Aquatic life

How many of you believe in MERMAIDS ! ? 

How many of you love watching fishes for long hours .

How many of you love beaches or rivers or ponds ?? !

I think many of U ! :D  [ same here :) ]

 

Here's one clip of aquatic life :- 

 

 

 

liked it ? 

 

Well you would be glad to know that aquatic life is not under much threat as compared to wildlife or forests . Though the aquatic life is not in much danger still we may face a situation where aquatic animals are extinct.

 

How are is aquatic life harmed ?

they are harmed when we humans pollute the place in which they live i.e ?? water .

 

If you thought throwing your sandwich wrapper in a stream while camping was most common form of water pollution, think again: from agricultural runoff to waste treatment, pollution affects more and more of the Earth's water supply every minute. Check out five of the most invasive and damaging types of pollution (but please: still throw that sandwich wrapper in the trashcan). 

 

Sewage and Fertilizers
 

Sewage doesn't present as big of a problem as some other pollutants, but it does have its dangers: in small quantities, it breaks down naturally and doesn't harm water at all, but in large quantities it depletes the amount of oxygen in the water. When too much oxygen is erased, the polluted area can't support sea life. These areas are known as "dead zones," and there are more than 400 of them around the world, causing major damage to the health of the oceans.

 

Acid Rain
 

Though the acid rain-awareness campaign has made this less of an issue than it was in the past, it's still a major pollution problem. A quick refresher on the how: the burning of fossil fuels releases compounds that interact with the H20 in the air, creating a modified version of the raindrop—one that includes nitric and sulfuric acid, which pollutes the water and ground that's affected by the rain. Too much of those acids inhibits plant growth, and soil damage on a major scale would take eons to repair—which makes soil a "non-renewable resource," according to the U.S. Geological Survey.

 

Non-point Sources
 

All water pollution happens in one of two ways: via non-point or point systems. Non-point pollution comes from indirect sources, like agricultural runoff, mining waste, paved roads, and industrial activity. It's impossible to trace the original polluter in these cases, but toxic chemicals and compounds make their way into the water system just the same—through rainwater drainage, melting snow, and running rivers.

 

The Oil Industry
 

Everything about the oil industry—drilling, moving, laying pipeline, shipping—opens up the possibility for water pollution. From rigs that are compromised by foul weather (like those on the Gulf Coast) to barges that have accidental spills, the damage is never intentional, but it's still one of the major dangers facing clean water and marine life.

 

Heat
 

This may not seem like such a bad thing—after all, hot water and cold water even out eventually, right? Right—but until then, discharging hot water while cooling power plants means changing the temperature of the water source, which can encourage the species density to change and alter the biology of the water. Thermal pollution, then, can be just as damaging as bacterial or sediment pollution.