1972
Risultati di ricerca
1 giorno fa · An adult narwhal is typically 3.0 to 5.5 m (9.8 to 18.0 ft) in length and 800 to 1,600 kg (1,800 to 3,500 lb) in weight. Carl Linnaeus scientifically described the species in his 1758 work Systema Naturae . The narwhal inhabits Arctic waters, and is vulnerable to predatory attacks from polar bears, orcas and humans.
