The giant Amazon water lily is the world’s largest water lily of the family Nymphaeaceae. Its massive leaves may exceed seven feet in diameter and visitors to the Peruvian Amazon are always greatly impressed by these absolutely amazing plants. There are a number of characteristics of this huge lily that most people are not aware of. For example, the leaves are extremely durable and the underside veins are lined with very large spines. The spines are strong enough to prevent their being food for aquatic and semi-aquatic animals like manatees and capybara.