The sand tiger shark (Carcharias taurus), grey nurse shark, spotted ragged tooth shark, or blue-nurse sand tiger is a species of shark that inhabits coastal waters worldwide. It lives close to the shorelines and sandy beaches of North America, hence the name sand tiger shark. It also dwells in the waters of Japan, Australia, and South Africa. Despite its fearsome appearance and strong swimming ability, it is a relatively placid and slow-moving shark. This species has a sharp, pointy head, and a bulky body. The sand tiger's length can reach 3.0 to 3.4 meters (9.8 to 11.2 ft). They are grey with reddish-brown spots on their backs. The sand tiger prefers to hunt close to shore, and shivers (groups) have been observed to hunt large schools of fish. Their diet consists of bony fish, crustaceans, squid, and skates. Unlike other sharks, the sand tiger can gulp air from the surface, allowing it to be suspended in the water column with minimal effort. During pregnancy, the most developed embryo will feed upon its siblings, a reproductive strategy known as intrauterine cannibalism. The sand tiger is categorized as vulnerable on the International Union for Conservation of Nature Red List. It is the most widely kept shark in public aquariums owing to its large size and tolerance for captivity.
These sharks were also recently used in a successful experiment in artificial uterus development. (Source: http://www.wired.com/wiredscience/2011/09/artificial-shark-uterus/)
Read more about Sand Tiger Shark: Taxonomy, Description, Behaviour, Interaction With Humans, Habitat and Range, Reproduction, Conservation Status, Common Names
Famous quotes containing the words sand, tiger and/or shark:
“She had more sand in her than any girl I ever see: in my opinion she was just full of sand. It sounds like flattery, but it ain’t no flattery.”
—Mark Twain [Samuel Langhorne Clemens] (1835–1910)
“Truly men hate the truth; they’d liefer
Meet a tiger on the road.
Therefore the poets honey their truth with lying; but religion-
Vendors and political men
Pour from the barrel, new lies on the old,”
—Robinson Jeffers (1887–1962)
“They will tell you tough stories of sharks all over the Cape, which I do not presume to doubt utterly,—how they will sometimes upset a boat, or tear it in pieces, to get at the man in it. I can easily believe in the undertow, but I have no doubt that one shark in a dozen years is enough to keep up the reputation of a beach a hundred miles long.”
—Henry David Thoreau (1817–1862)