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The dugong (/ ˈ d (j) uː ɡ ɒ ŋ /; Dugong dugon) is a marine mammal.It is one of four living species of the order Sirenia, which also includes three species of manatees.It is the only living representative of the once-diverse family Dugongidae; its closest modern relative, Steller's sea cow (Hydrodamalis gigas), was hunted to extinction in the 18th century.
M. arctodites was named in 1994 by Aranda-Manteca, Domning and Barnes based on three specimens found in California and Baja California, constituting the first valid record of this genus from the north-eastern Pacific. [5] The most recently described species is Metaxytherium albifontanum, described in 2014 by Jorge Vélez-Juarbe and Daryl P ...
A humpback whale (Megaptera novaeangliae) A leopard seal (Hydrurga leptonyx). Marine mammals are mammals that rely on marine (saltwater) ecosystems for their existence. They include animals such as cetaceans (whales, dolphins and porpoises), pinnipeds (seals, sea lions and walruses), sirenians (manatees and dugongs), sea otters and polar bears.
A fossil reveals how a now-extinct species of dugong was swimming in the sea about 15 million years ago when it was preyed upon by a crocodile and a tiger shark.
In other dugong populations in western and eastern Australia, there is evidence that dugongs actively seek out large invertebrates. [ 39 ] Populations of Amazonian manatees become restricted to lakes during the July–August dry season when water levels begin to fall, and are thought to fast during this period.
Found in all oceans [327] it was one of the largest and most powerful predators in vertebrate history, [326] and probably had a profound impact on marine life. [328] The Greenland shark has the longest known lifespan of all vertebrates, about 400 years. [329] Some sharks such as the great white are partially warm blooded and give live birth.
The average price for a dozen large eggs in California hovered around $6.72 as of this week, according to data from the U.S. Department of Agriculture. The cause?
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