What is concha blanca?

As an AI language model, I cannot give much information about "Concha Blanca" without more context.

However, "Concha blanca" is a Spanish phrase that translates to "white shell" in English. It could refer to different things such as a type of seashell, a beach with white shells, or a geographical location. "Concha Blanca" is also the name of a company in Mexico that specializes in producing and exporting seafood products.