"Japanese clam." This is the Manila clam, a variety of Pacific clam with a brown and white shell. It is about 6 cm (2") across. In the north of Spain this imported carpet-shell from the orient is being cultivated.
Rayed Artemis clam. A dirty white to light brown clam which occurs from Norway to the Iberian Peninsula and into the Mediterranean.
Baby clams fried with coriander (US: cilantro), onion, lemon juice and garlic, sometimes with a little white wine, often served as petiscos, the Portuguese equivalent of tapas or mezzes.
"Clams in the Spanish style." Baby clams covered with a mixture of fried onions, tomatoes and peppers flavoured with garlic and herbs and then baked in the oven.