Algae Bloom Again in Qingdao sea

ever seen algae blooms? 

the coastal city of Qingdao where i used to live 2 years ago

the Zhanqiao pier, one of the city's icon, now is blooming with algae

taken at the Olympic city

yachts used for removing algae on the surface of the ocean

civilian and policemen desperately removing algaes from the shore

usually at this time, beaches are filled with people swimming, now it is filled with algae and people trying to get rid of it

trucks of algae. i remember how they were working on same thing last 2008 in preparation for the coming Sailing Olympics which was held in this city.

from the top. would you like to sea the oceans like this? hope NOT, i think ocean still look nicer when it's BLUE ",)

(pictures above are recent. i got them from internet)

this picture of me was taken in 2008 just before the olympics. i already felt overwhelmed by the algae on the sea that time. and now i guess it kinda scary. according to the news it has doubled its amount. ugh, i remember how it smells. it stinks. it was a very strong sea smell. and on the roads you'll see them left scattered from the trucks which brings them from the beaches to the dumpsite.

is it brought by global warming too? i made a little research about algae blooms out of curiousity and here are some information i found: 

Requirements for a Bloom

"Algae require warmth, sunlight, and nutrients to grow and reproduce, so they live in the upper 60 to 90 meters (200 to 300 feet) of ocean water. The upper layer of water, the epipelagic zone, is rich in oxygen, penetrated by sunlight, and warmer than water at lower levels. As algae and other organisms that live in the ocean die, they fall to the bottom of the ocean, where they decay and release the compounds from which they were made. Under certain conditions, these nutrients can deplete the oxygen in the water.
Temperature and salt concentration determine the density of water and how water moves (currents). Cold water is denser (heavier) and sinks from the surface (downwelling). Other water moves across to replace it. Eventually, water at the surface is replaced by water that has risen, or upwelled, from the bottom to the surface somewhere else in the ocean. These upwellings bring nutrient-rich waters to the top. This increase in nutrients can trigger algae blooms.
An increase in nutrients also may be caused by activities of humans, such as runoff from animal farms or fertilized croplands and lawns, or atmospheric deposition of sulfur and nitrogen compounds or oxides derived from the burning of fossil fuel . These nutrients lead to blooms in coastal waters to a greater extent than in the open ocean.
However, some of these nutrients do find their way to the open ocean far from shore, and contribute to the formation of blooms in the open ocean. Their movement is aided by the wind and by ocean currents. Algae blooms in the open ocean are not usually harmful; instead, they provide many benefits, largely deriving from the fact that the open ocean is relatively unproductive (low in nutrients)".
Read more: Algal Blooms in the Ocean - sea, oceans, effects, temperature, important, salt, types, plants, source, effect, marine, oxygen, human, Pacific http://www.waterencyclopedia.com/A-Bi/Algal-Blooms-in-the-Ocean.html#ixzz0sVbztGIa