Most of the river is relatively shallow, and you can easily stand up, as a last resort, (it is better to float so as not to raise sediment or hinder the pace of the group).Knowing how to swim is recommended on the tour. Exceptions for people who don’t know how to swim have been made in the past. However, even if the person does not know how to swim, in order to do the tour you have to master the use of a diving mask and snorkel.