Mammals (English)
Manatees (English)
Manatees and Dugongs (English)
Marine otter (English)
Mediterranean monk seal (English)
Melon-headed whale (English)
Minke whale (English)
Marsouin aptère (French)
Marsouin commun (French)
Marsouin de Burmeister (French)
Marsouin de Dall (French)
Marsouin de Lahille (French)
Marsouin du golfe de Californie (French)
Morse (French)
Marsopa común (Spanish)
Marsopa de anteojos (Spanish)
Marsopa de Dall (Spanish)
Marsopa espinosa (Spanish)
Marsopa lisa o sin aleta (Spanish)
Morsa (Spanish)