Navajas. Razor clams, named due to their shell shapes resembling a straight razor—are the forgotten cousin of the clam world. Sure, littlenecks, manilas and cockles get most of the attention, but the long shape of their shell gives them a unique texture and taste similar to octopus or squid. The flavor is deep and briny. Razor Shell Clams in their shells in brine makes a wonderful tapa, with garlic and chilies, and our favorite way to serve them.