Macoma, Genus
Macropodia, Genus
Mammalia, Classis
Mastocarpus, Genus
Metridium, Genus
Molgula, Genus
Mollusca, Phylum
Mugilidae, Familia
Mya, Genus
Mycale, Genus
Myoxocephalus, Genus
Mysidacea, Ordo
Mytilus, Genus