As you travel 500 miles up from the mouth of the muddy brown waters of the Amazon, you come to encounter the 'Encontras de Aguas' where the dark blue waters of the Tapajo's River flow into the Amazon off the shores of Santarem. Here, pink and gray dolphins play under the mango trees as exotic birds fly overhead. Santarem, a city of 250,000 people, is a true melting pot of Native American, African, European, and Asian cultures and customs, but it is 100% Brazilian. Samba and Boi Bumba music fill the air and the hearts of the people. Even though Santarem is a tropical paradise, the majority of the people live in abject poverty. Due to the exploitation of resources, including cutting thousands of acres of forest, over-fishing, and mining, the waters of the two rivers are becoming increasingly more polluted, and employment opportunities are dwindling.