Search results
Results from the WOW.Com Content Network
Greenland sharks have also been found with remains of moose, polar bear, horse, and reindeer (in one case an entire reindeer body) in their stomachs. [13] [26] [22] The Greenland shark is known to be a scavenger and is attracted by the smell of rotting meat in the water.
Greenland shark (Somniosus microcephalus) - 250 to 500 years; ... All cnidarians can regenerate, allowing them to recover from injury and to reproduce asexually.
Greenland shark reproduction remains mysterious, according to Britannica. Scientists believe that females begin reproducing after reaching about 13 feet in length — or about 150 years in age.
Parthenogenesis in sharks has been confirmed in the bonnethead [35] and zebra shark. [36] Other, usually sexual species, may occasionally reproduce parthenogenetically, and the hammerhead and blacktip sharks [37] are recent additions to the known list of facultative parthenogenetic vertebrates. A special case of parthenogenesis is gynogenesis.
Unlike most sharks and other vertebrates, which have hard tissues like spines that form growth rings (much like the rings inside a tree trunk), Greenland sharks lack these structures, making age ...
But, in reality one of the ocean's largest sharks lives here. Nicknamed the sleeper shark, Greenland sharks are very slow moving and mostly Mysterious giant sharks may be everywhere
Many sharks can contract and dilate their pupils, like humans, something no teleost fish can do. Sharks have eyelids, but they do not blink because the surrounding water cleans their eyes. To protect their eyes some species have nictitating membranes. This membrane covers the eyes while hunting and when the shark is being attacked.
Two marine biologists share 10 shark facts for kids, as well as why shark attacks happen and why sharks are essential to human survival.