Black skimmers , yellow - billed terns , yellow - spotted river turtles , the enormous Amazon river turtle , and other species nest directly on the sand in great numbers .
The sand itself is the primary habitat for a number of species .
Black skimmers , yellow - billed terns , yellow - spotted river turtles , the enormous Amazon river turtle , and other species nest directly on the habitat in great numbers .
The sand itself is the primary habitat for a number of species .