Silica cycleCycling of silica from the maritime environment. Silicon typically takes place in character as silicon dioxide (SiO2), also called silica. It cycles through the maritime environment, entering mainly by riverine runoff. Silica is faraway from the ocean by organisms such as diatoms and radiolarians that use an amorphous form https://ekcochat.com/post/818180_hollow-glass-sphere-lightweight-microspheres-used-as-fillers-in-composites-coati.html