A tiger shark swims in shallow water near a sand bar. Tiger sharks are often targeted by fishermentheir liver supplies oil rich in Vitamin A, their skin makes good leather, and their fins and flesh can be eaten. Tiger sharks are among the most dangerous to humans, second only to the great white shark.
Tiger sharks are the goats of the fish world, eating nearly anything. While their normal diet consists of sea turtles, fish, birds, crustaceans, and squid, they also eat carrion and human garbage. One large female caught off the north end of the Gulf of Aqaba in the Red Sea contained two empty cans, a plastic bottle, two burlap sacks, a squid, and an 8-inch (20-centimeter) fish.
Photograph by Kevin Fleming/CORBIS