Mollusks maintain the symmetry of their pearls by adjusting the thickness of each layer of shimmering nacre. If one layer of the pearl’s nacre is thinner, the next layer is thicker and will balance ...

Researchers produce the first robust genome of pearl oysters, which they hope can be used to find strains that are resilient to increasingly common diseases or that produce more beautiful pearls.

Epstein pearls are small, white bumps that form in a baby’s mouth before they're born. Learn more about them, including how they're diagnosed and treated. Medically reviewed by Wendy L. Hunter, M.D.

Pearl oysters are an important animal for farming in Japan as they produce the beautiful pearls, which are of economic value. But, in the last 20 years, a combination of different factors, such as ...