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The surveys have been used to produce seasonal maps showing the density of right whales (number of animals per square kilometer) throughout the U.S. east coast and Nova Scotia. [122] NOAA Fisheries maintains an interactive map of recent right whale sightings.
The whales make groans, pops and belches typically at frequencies around 500 Hz. The purpose of the sounds is not known but may be a form of communication between whales within the same group. Northern right whales responded to sounds similar to police sirens—sounds of much higher frequency than their own. On hearing the sounds, they moved ...
Large cod and tuna were caught frequently in the area, and whaling ships caught many whales in the area. In 1854, the United States Navy sent Lieutenant Commander Henry Stellwagen to survey and map the area. It was known that there was an ocean bank in the area, but its extent and shape were not known.
Map of sightings of right whales in the Bering Sea and Gulf of Alaska 1973–2007 and designated critical habitat. Despite many aircraft and ship-based searches, [70] as well as analysis of listening device records, only a few small areas report recent sightings in the eastern North Pacific. The southeastern Bering Sea produced the most ...
The sanctuary encompasses 1,400 square miles (3,600 km 2) in the islands' waters.It was designated by United States Congress on November 4, 1992, as a National Marine Sanctuary to protect the endangered North Pacific humpback whale and its habitat [2] The sanctuary promotes management, research, education and long-term monitoring.
The family Balaenidae, the right whales, contains two genera and four species. All right whales have no ventral grooves; a distinctive head shape with a strongly arched, narrow rostrum, bowed lower jaw; lower lips that enfold the sides and front of the rostrum; and long, narrow, elastic baleen plates (up to nine times longer than wide) with fine baleen fringes.
Whales are fully aquatic, open-ocean animals: they can feed, mate, give birth, suckle and raise their young at sea. Whales range in size from the 2.6 metres (8.5 ft) and 135 kilograms (298 lb) dwarf sperm whale to the 29.9 metres (98 ft) and 190 tonnes (210 short tons) blue whale, which is the
Fin whales in the Gulf of St. Lawrence, off the coast of Labrador. The fin whale is more prevalent in high-latitude regions than throughout the tropics.However, in the autumn, Northern Atlantic fin whale populations off the coast of Labrador appear to migrate to the Caribbean islands, passing through Bermuda [2] [3]