 For example, an increase in boat traffic has disturbed the feeding of giant otters in Manú National Park, Peru.Further disturbance to wildlife occurs when tourist guides dig up turtle nests and chase swimming jaguars, tapirs, and otters to give clients better viewing opportunities.On the shores of Lake Kariba in Zimbabwe, the number of tourist boats and the noise generated has disrupted the feeding and drinking patterns of elephants and the black rhinoceros - it is feared that further increases in boat traffic will affect their reproductive success.