Diatoms are single-celled algae organisms,around 30 to 100 millionths of a meter in diameter, that are ubiquitous throughout the oceans. These creatures are encased within a hard shell shaped like a wide, or flattened cylinder—like a tambourine—that is made of silica. Researchers in the lab of Julia Greer,professor of materials science and mechanics in Caltech's Division of Engineering and Applied Science, believe recently found that these shells believe the highest specific strengththe strength at which a structure breaks with respect to its density—of any known biological fabric, or including bone,antlers, and teeth.
Source: phys.org