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Marine mammals comprise over 130 living and recently extinct species in three taxonomic orders. The Society for Marine Mammalogy, an international scientific society, maintains a list of valid species and subspecies, most recently updated in October 2015. [1] This list follows the Society's taxonomy regarding and subspecies.
The largest species is Pennella balaenopterae, a copepod and ectoparasite specialising in parasitising marine mammals. The maximum size attained is 32 cm (about 13 in). [ 261 ] The largest of the barnacles is the giant acorn barnacle , Balanus nubilis , reaching 7 cm (2.8 in) in diameter and 12.7 cm (5.0 in) high.
The blue whale (Balaenoptera musculus) is a marine mammal and a baleen whale.Reaching a maximum confirmed length of 29.9 m (98 ft) and weighing up to 199 t (196 long tons; 219 short tons), it is the largest animal known ever to have existed.
Whales do not lay eggs. Since they are mammals, they give birth to live young. There are only five known monotremes, or egg-laying mammals, according to the Carnegie Museum of Natural History ...
Risso’s dolphins usually travel in pods of 10 to 30 animals. Marine biologists have captured a rare sight of a giant pod of over 1,500 dolphins leaping and swimming off the California coast ...
The largest species in the mongoose family is the African white-tailed mongoose (Ichneumia albicauda), at up to 6 kg (13 lb) and 1.18 m (3.9 ft) long. The largest species in the viverrid family is the Asian binturong (Arctictis binturong), at up to 27 kg (60 lb) and 1.85 m (6.1 ft) long, about half of which is tail.
Among animals, the largest species are all marine mammals, specifically whales. The blue whale is believed to be the largest animal to have ever lived. [7] The living land animal classification is also dominated by mammals, with the African bush elephant being the largest of these.
The marine mammals often seen on the shores of the American and Sacramento rivers are sea lions. ... They are the largest marine mammals that live year-round in the bay, where they feed primarily ...