Submarina is a California chain that was established in San Diego in the late 1970s. This particular franchise has been owned and operated by an Oceanside native since 2009. Submarina sells an extensive selection of fresh sandwiches and offers both eat-in and take-out options. The staff members at this busy restaurant are friendly and efficient, and speak both Spanish and English. Submarina also supports community establishments such as the Oceanside Boys and Girls Club and the CYB Little League.