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.
A: The sea is blue because water, in large quantities, is blue. Also, when the light from the sun hits the water, it gets filtered so that redness is absorbed, allowing more of the blue color to be reflected. Another reason why the sea appears blue is because it reflects the blue color of the sky. Little ocean particles serve as reflective devices, and because the sky surrounds the ocean, the water appears blue. The presence of plant life and algae can cause the sea to appear green, and it may even appear gray when the sky is cloudy.