Green sea turtle
The numbers of green turtles around the world has dropped by more than half over the last 150 years. The main reasons are hunting of turtles and the taking of their eggs. Many turtles are killed when they get caught in fishing nets. There is also a disease called fibropapillomatosis which is affecting them. This disease which causes tumors to grow on the turtle's face is probably caused by damage and pollution of their nesting beaches.