Nascentes da Serra and Rio Azul, Bonito MS: snorkelling away from the crowd

Nascentes da Serra, on the Rio Azul, offers the same clear water as the famous floats around Bonito with far fewer people. It is the alternative for anyone who booked late — or who would rather not compete for the main attractions.

What Nascentes da Serra is

Nascentes da Serra lies in the Rio Azul area, around Bonito, and runs a float on a spring-fed stretch. The water comes from the same limestone system that feeds the Sucuri and the Rio da Prata: filtered through rock and therefore clear.

What separates this attraction from the better-known ones is not the water but the traffic. Not being at the top of the lists, it takes fewer visitors per day — which, in an activity where the group ahead determines the visibility of the group behind, makes a concrete difference.

Nascentes da Serra and Rio Azul, Bonito MS: snorkelling away from the crowd

How a snorkel float works, in practice

People who have never done one imagine swimming; it is not. You put on a wetsuit, which insulates and adds buoyancy, and a vest over it. The mask covers eyes and nose, and the snorkel lets you breathe with your face underwater. From there, your body floats by itself and the current does the moving: your job is to look down and keep your feet away from the bed.

That last part is the only rule that really matters. The bed of a spring-fed river is a fine sediment which, once lifted, stays in suspension for several minutes — and wipes out visibility for everyone behind you.

Why fewer people changes the outing

At the busiest floats, departures are spaced precisely so one group does not enter on top of another. Even so, on a peak day the river takes many groups, and the last in line meets water that has already been stirred.

At a less-demanded attraction that problem simply does not arise. It is not about water quality: it is arithmetic about how many people passed through before you that day.

What to bring

Swimwear worn underneath — changing on site is quick.
Footwear that can get wet, for the trail to the entry point.
A towel and a dry change for afterwards.
A sealed case on a lanyard if you are taking your phone.
Sunscreen and repellent applied before you reach the river.

When to go

Like every float in the region it depends on rain: the dry season means predictability, and a storm in the headwaters can cloud the water or suspend the activity. In high season, when the famous attractions sell out, this is where slots tend to remain.