The unexpected encounter between the tourist group and the giant 7-meter-long anaconda in the river bed made all of them a 'heart attack'.
The astonishing images below show the fierce wild nature of life when the giant Anaconda attacked, entwined and fed the Caiman crocodile.
The Navy has reported that the Swiftships Shipbuilding Company has tested the Anaconda floating robot prototype capable of carrying out many missions in the river.
A device made up of giant rubber tubes may have the decisive significance in making electromagnetic energy from ocean waves.