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Megalodon. Otodus megalodon (/ ˈmɛɡələdɒn / MEG-əl-ə-don; meaning "big tooth"), commonly known as megalodon, is an extinct species of giant mackerel shark that lived approximately 23 to 3.6 million years ago (Mya), from the Early Miocene to the Early Pliocene epochs.
The value of shark fins for shark fin soup has led to an increase in shark catches where usually only the fins are taken, while the rest of the shark is discarded, typically into the sea; health concerns about BMAA in the fins now exists regarding consumption of the soup A 4.3-metre (14 ft), 540-kilogram (1,200 lb) tiger shark caught in Kāne ...
The whale shark, the world's largest fish, is classified as Endangered. Binding legislation and harvest management strategies... are urgently needed to address the disproportionate impact of fisheries on cartilaginous fishes. – IUCN global study 2010 Threatened sharks are those vulnerable to endangerment (extinction) in the near future. The International Union for Conservation of Nature ...
An initiative of the Benioff Ocean Science Laboratory at the University of California, Santa Barbara, is monitoring great white sharks near California’s Padaro Beach. Sharks are congregating at ...
Continued support will help preserve their livelihood. Sharks could be facing extinction over the next couple of decades. Human interference is largely to blame for the species interference ...
To test that theory, researchers from the Shark Lab flew drones over 26 southern California beaches once a month for roughly two years and noticed something striking: People and sharks were, more ...
Helicoprion is an extinct genus of shark -like [1] eugeneodont fish. Almost all fossil specimens are of spirally arranged clusters of the individuals' teeth, called "tooth whorls", which in life were embedded in the lower jaw. As with most extinct cartilaginous fish, the skeleton is mostly unknown. Fossils of Helicoprion are known from a 20 ...
Tennessee, Cumberland, Ohio, and Wabash River systems [192] Extinct in 1936 due to loss of habitat through impoundment or channelization. [8] Sampson's pearly mussel. Epioblasma sampsonii. Kentucky, Illinois, and Indiana [193] Extinct in the 1930s or 1940s due to habitat destruction and fragmentation.