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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.
Total species range is highly variable for marine mammal species. On average most marine mammals have ranges which are equivalent or smaller than one-fifth of the Indian Ocean . [ 33 ] The variation observed in range size is a result of the different ecological requirements of each species and their ability to cope with a broad range of ...
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 ...
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.
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.
The African bush elephant (Loxodonta africana) is the largest living land animal. A native of various open habitats in sub-Saharan Africa, males weigh about 6.0 tonnes (13,200 lb) on average. [24] The largest elephant ever recorded was shot in Angola in 1974. It was a male measuring 10.67 metres (35.0 ft) from trunk to tail and 4.17 metres (13. ...
Rorquals are the largest group of baleen whales, with eleven species in three genera. They include the largest animal that has ever lived, the blue whale . They take their name from a Norwegian word meaning "furrow whale"; all members of the family have a series of longitudinal folds of skin running from below the mouth back to the navel ...