Sand Tiger Shark
Sand tiger sharks (Odontaspididae Eugomphodus Taurus) are found mainly in the coastal waters of all the oceans except the central and eastern Pacific and central Indian oceans. They are a migratory species, commonly found in the shallow coastal waters during the summer and moving south or to deeper waters in the winter. They are bottom and surface dwellers, and most active at night.
Sand tiger sharks usually range from four-to-eight feet in length. Adult sand tiger sharks have hunch backs, narrow snouts, a golden-brown sheen to the skin, and awl-shaped, dagger-like pointed teeth that are excellent for grasping and eating prey whole. Their diet consists of bony fish, small sharks and rays, cephalopods and large crustaceans. Sand tiger sharks often feed cooperatively, which makes them socially unique among sharks.
The females are usually larger than the males and tend to stay in localized areas, while the males migrate more. They are ovoviviparous, meaning producing eggs that hatch inside the female's body. But this species is also unique because of the intra-uterine cannibalism that occurs. Only one embryo per uterus survives. The sand tiger shark is more than three feet in length at birth.
The sand tiger shark is considered somewhat dangerous; however there are no reported cases of unprovoked attacks in the U.S. Their only predator is humans. In the 1960s sand tiger sharks were almost wiped out due to spear fishing, over-collecting, and being fished for shark fin soup and their livers, which are rich in vitamin A.
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