Dylan Dreyer revisits the Amazon River to explore what lives in the water and on the islands, including a fishing trip with some locals and a run-in with two of the Amazon River's biggest mammals -- the giant river otter and the Amazonian manatee.

Dylan Dreyer returns to Venezuela to continue exploring its diverse and exotic wildlife, including swimming with crocodiles and avoiding waterfalls on a journey to discover what thrives in Venezuela's rich ecosystem.