1 Common triggers of an anaphylactic reaction include drugs, such as penicillin, insect stings, foods (peanuts, shellfish), X-ray dye, and latex. 2  The symptoms of anaphylaxis may vary and can include hives, tongue swelling, vomiting, and even shock.  If someone is at risk, avoidance is the best form of treatment.
Ocean regions with high concentrations of phytoplankton will have shades of blue-green depending upon the type and density of the phytoplankton population there. The basic principle behind the remote sensing of ocean color from space is that the more phytoplankton is in the water, the greener it is.
This means that water reflects blue light and absorbs all the rest. Some areas of the sea sometimes appear green but that has to do with how shallow that part is. As you travel deeper under sea you will find that at about 46 meters, most of the blue light is replaced with pitch darkness. Why is the sky blue? The sea and other water bodies are large masses of water contained by catchments in the land whereas the sky is all around us. Even the sky, like the sea appears to be many different shades of blue. You can make this comparison because the same effect that takes place in the sea is what makes the sky blue. The trillions upon trillions of water droplets in the atmosphere reflect the blue wavelength of the sunâs rays while absorbing all the rest.