Search results
Results From The WOW.Com Content Network
Shark lifespans vary by species. Most live 20 to 30 years. The spiny dogfish has one of the longest lifespans at more than 100 years. [68] Whale sharks (Rhincodon typus) may also live over 100 years. [69]
The river sharks (of the genus Glyphis) live in freshwater and coastal marine environments. The bull shark ( Carcharhinus leucas ), can swim between salt and fresh water, and are found in tropical rivers around the world.
Whale sharks inhabit the open waters of all tropical oceans. They are rarely found in water below 21 °C (70 °F). [2] Whale sharks' lifespans are estimated to be between 80 and 130 years, based on studies of their vertebral growth bands and the growth rates of free-swimming sharks.
A reclusive deep-water species that’s generally found on the coast, Washington Department of Fish and Wildlife (WDFW) biologists think that sixgill sharks come into Puget Sound to pup.
Great white sharks live in almost all coastal and offshore waters which have water temperature between 12 and 24 °C (54 and 75 °F), with greater concentrations in the United States (Northeast and California), South Africa, Japan, Oceania, Chile, and the Mediterranean including the Sea of Marmara and Bosphorus.
The tiger shark is the only species in its family that is ovoviviparous; its eggs hatch internally and the young are born live when fully developed. [7] Tiger Sharks are unique among all sharks in the fact that they employ embrytrophy to nourish their young inside the womb. The young gestate in sacks which are filled with a fluid that nourishes ...
The biggest fish in the sea is taking to new waters. The whale shark can reach more than 40 feet in length and weigh up to 47,000 pounds! But these massive beings are actually quite harmless ...
Argos system satellite tagging of 20 basking sharks in 2003 confirmed basking sharks move thousands of kilometres during the summer and winter, seeking the richest zooplankton patches, often along ocean fronts. [7] [31] They shed and renew their gill rakers in an ongoing process, rather than over one short period. [32]