![]() This review summarizes the documented acoustic signals, hearing abilities, and responses to sound of a critically endangered baleen whale, the North Atlantic right whale ( Eubalaena glacialis), highlights gaps in the current body of literature, and identifies priorities for future research. Modern ocean noise levels are considerably louder than historical levels, and noise is therefore considered to be a threat to acoustically communicating marine mammal species. The acoustic signals produced by marine mammals, and their ability to perceive signals produced by conspecifics, are directly impacted by the level of ambient noise in the underwater environment in which they inhabit. Right whales feed on copepods, tiny ocean animals about the size of a grain of rice. Newborn right whales can be 15 feet long and weigh 2000 lbs. A right whale’s head measures about one-third of its body length. Right whales are individually identified by callosities (bumps) on their heads. Marine mammals communicate predominately through acoustic modalities for a variety of functions, including foraging and reproduction. North Atlantic right whale facts Fewer than 340 remain. This is especially relevant for at-risk species, as it can aid in monitoring and conservation efforts. This site is maintained by researchers at the New England Aquarium, who serve as curators of all North Atlantic Right Whale photographs for the North. ![]() Later, commercial whaling brought them to the brink of extinction by the early 1900s. North Atlantic right whales were first hunted as early as the 9th century by Norse whalers. Creating a baseline understanding of communicative signals and perceptual abilities is imperative for gaining insight into a species' life history. The North Atlantic right whale is one the world’s most endangered species of large whale.
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