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Sharkbook is a global database for identifying and tracking sharks, particularly whale sharks, using uploaded photos and videos.In addition to identifying and tracking sharks, the site allows people to "adopt a shark" and get updates on specific animals.
The Greenland shark prefers cold water temperatures (-1.1 to 7.4 °C) and deep water (100 to 1,200 m). [28] As an ectotherm living in a just-above-freezing environment, this species is sluggish and slow-moving, with the lowest swim speed and tail-beat frequency for its size across all fish species, which most likely correlates with its very ...
She gained international media attention for free diving with sharks, including great white sharks, to raise awareness about shark conservation and promote her business. [6] [2] [7] [8] Ramsey is based in Hawaii, and has dived with 47 species of sharks around the world as of 2019. [1] Ramsey swimming with shark in trailer for She is the Ocean ...
This torpedo-like shark can be spotted around 10 miles off the southwest coast of England in summer months. They can grow up to 12ft (3.8m) long and are known to give birth to as many as 50 live ...
The selected pictures are what we believe to be the best pictures on Wikipedia related to sharks.Any image that is featured or valued on the English Wikipedia, or featured, valued or considered high quality on Wikimedia Commons, and is used in one or more articles within the scope of WikiProject Sharks, automatically qualifies, and may be added below.
The bull shark (Carcharhinus leucas), can swim between salt and fresh water, and are found in tropical rivers around the world. Some prehistoric sharks (in a broad sense), including hybodonts and xenacanths, are also thought to have inhabited freshwater environments.
The first shark-like chondrichthyans appeared in the oceans 400 million years ago, [1] developing into the crown group of sharks by the Early Jurassic. [2] Listed below are extant species of shark. Sharks are spread across 556 described and 23 undescribed species in eight orders. The families and genera within the orders are listed in ...
The ISRA criteria take into account the complex biological and ecological needs of sharks. There are four criteria and seven sub-criteria. Important Shark and Ray Areas (ISRA) are discrete three-dimensional portions of habitat that are important for one or more species of chondrichthyans (sharks, rays and chimaeras) and have the potential to be managed for conservation. [1]