The Rhine is one of the major European rivers. The river begins in the Swiss canton of Graubünden in the southeastern Swiss Alps. It forms part of the Swiss-Liechtenstein, Swiss-Austrian, and Swiss-German borders. After that the Rhine defines much of the Franco-German border, after which it flows in a mostly northerly direction through the German Rhineland. Finally in Germany the Rhine turns into a predominantly westerly direction and flows into the Netherlands where it eventually empties into the North Sea. It drains an area of 9,973 sq km and its name derives from the Celtic Rēnos. There are also two German states named after the river, North Rhine-Westphalia and Rhineland-Palatinate.
Whaling is the hunting of whales for their usable products such as meat and blubber, which can be turned into a type of oil that became increasingly important in the Industrial Revolution. It was practiced as an organized industry as early as 875 AD. By the 16th century, it had risen to be the principal industry in the Basque coastal regions of Spain and France. The whaling industry then spread throughout the world and became increasingly profitable in terms of trade and resources. Some regions of the world's oceans, along the animals' migration routes, had a particularly dense whale population, and became the targets for large concentrations of whaling ships, and the industry continued to grow well into the 20th century. The depletion of some whale species to near extinction led to the banning of whaling in many countries by 1969, and to an international cessation of whaling as an industry in the late 1980s.
Whales are a widely distributed and diverse group of fully aquatic placental marine mammals. As an informal and colloquial grouping, they correspond to large members of the infraorder Cetacea, i.e. all cetaceans apart from dolphins and porpoises. Dolphins and porpoises may be considered whales from a formal, cladistic perspective. Whales, dolphins and porpoises belong to the order Cetartiodactyla, which consists of even-toed ungulates. Their closest non-cetacean living relatives are the hippopotamuses, from which they and other cetaceans diverged about 54 million years ago. The two parvorders of whales, baleen whales (Mysticeti) and toothed whales (Odontoceti), are thought to have had their last common ancestor around 34 million years ago. Mysticetes include four extant (living) families: Balaenopteridae, Balaenidae, Cetotheriidae, and Eschrichtiidae. Odontocetes include the Monodontidae, Physeteridae, Kogiidae, and Ziphiidae, as well as the six families of dolphins and porpoises which are not considered whales in the informal sense.
The narwhal, also known as a narwhale, is a medium-sized toothed whale that possesses a large "tusk" from a protruding canine tooth. It lives year-round in the Arctic waters around Greenland, Canada and Russia. It is one of two living species of whale in the family Monodontidae, along with the beluga whale, and the only species in the genus Monodon. The narwhal males are distinguished by a long, straight, helical tusk, which is an elongated upper left canine. The narwhal was one of many species described by Carl Linnaeus in his publication Systema Naturae in 1758.
The Bering Sea is a marginal sea of the Northern Pacific Ocean. It forms, along with the Bering Strait, the divide between the two largest landmasses on Earth: Eurasia and the Americas. It comprises a deep water basin, which then rises through a narrow slope into the shallower water above the continental shelves. The Bering Sea is named after Vitus Bering, a Danish navigator in Russian service, who, in 1728, was the first European to systematically explore it, sailing from the Pacific Ocean northward to the Arctic Ocean.
Duisburg is a city in the Ruhr metropolitan area of the western German state of North Rhine-Westphalia. Lying on the confluence of the Rhine and the Ruhr rivers in the center of the Rhine-Ruhr Region, Duisburg is the 5th largest city in North Rhine-Westphalia and the 15th-largest city in Germany.
The Leine is a river in Thuringia and Lower Saxony, Germany. It is a left tributary of the Aller and the Weser and is 281 km (175 mi) long.
The beluga whale is an Arctic and sub-Arctic cetacean. It is one of two members of the family Monodontidae, along with the narwhal, and the only member of the genus Delphinapterus. It is also known as the white whale, as it is the only cetacean to regularly occur with this colour; the sea canary, due to its high-pitched calls; and the melonhead, though that more commonly refers to the melon-headed whale, which is an oceanic dolphin.
Shedd Aquarium is an indoor public aquarium in Chicago. Opened on May 30, 1930, the 5 million US gal aquarium holds about 32,000 animals and is the third largest aquarium in the Western Hemisphere, after the Georgia Aquarium and Monterey Bay Aquarium.
The Vancouver Aquarium is a public aquarium located in Stanley Park in Vancouver, British Columbia, Canada. In addition to being a major tourist attraction for Vancouver, the aquarium is a centre for marine research, ocean literacy education, climate activism, conservation and marine animal rehabilitation.
Mocha Dick was a male sperm whale that lived in the Pacific Ocean in the early 19th century, usually encountered in the waters near Mocha Island, off the central coast of Chile. American explorer and author Jeremiah N. Reynolds published his account, "Mocha Dick: Or The White Whale of the Pacific: A Leaf from a Manuscript Journal" in 1839 in The Knickerbocker. Mocha Dick was an albino and partially inspired Herman Melville's 1851 novel Moby-Dick.
SeaWorld San Antonio is a 250-acre (100 ha) marine mammal park, oceanarium and animal theme park in the Westover Hills District of San Antonio, Texas, on the city's west side. It is the largest of the three parks in the SeaWorld chain owned and operated by SeaWorld Parks & Entertainment and one of the world's largest marine-life theme parks focused on conservation, education and animal rescue. It is a member of the Alliance of Marine Mammal Parks and Aquariums (AMMPA) and is accredited by the Association of Zoos and Aquariums (AZA).
Wolfgang Gewalt was a German zoologist, author and former director of the Duisburg Zoo.
A public aquarium or public water zoo is the aquatic counterpart of a zoo, which houses living aquatic animal and plant specimens for public viewing. Most public aquariums feature tanks larger than those kept by home aquarists, as well as smaller tanks. Since the first public aquariums were built in the mid-19th century, they have become popular and their numbers have increased. Most modern accredited aquariums stress conservation issues and educating the public.
Moby-Dick is an 1851 novel by Herman Melville.
Germany is a country in Central Europe, that stretches from the Alps, across the North European Plain to the North Sea and the Baltic Sea. It is the second-most populous country in Europe after Russia, and is seventh-largest country by area in the continent. The area of Germany ranked 63rd and covers 357,021 km2 (137,847 sq mi), consisting of 349,223 km2 (134,836 sq mi) of land and 7,798 km2 (3,011 sq mi) of waters, smaller than Japan but larger than Republic of the Congo.
The following is a timeline of the history of the city of Duisburg, Germany.
Benny is a Beluga whale that made headlines in the United Kingdom in September 2018 after being sighted travelling towards London through the Thames Estuary. Benny was sighted several times over the ensuing weeks after his discovery in the Estuary, and appears to be healthy despite appearing alone.
Hvaldimir is a male beluga whale that fishermen near Hammerfest in northern Norway noticed in April 2019 wearing a camera harness. After being freed from the harness, the whale remained in the area and appeared used to humans. Speculation that he had been trained by Russia as a spy whale led to his being dubbed Hvaldimir, a pun on the Norwegian hval (whale) and Vladimir Putin.
