In a scenic coastal village, a group of children, Xola, Amari, and Niran, decide to spend their afternoon exploring the nearby beach. The three friends have been curious about a small, uninhabited island sitting a short distance from the shore which is rumored to be home to some hidden treasure. Now, having built up enough courage, they plan to visit the island and investigate. With the low tide slowly creeping in, they notice that a natural path of sandbars connects the beach to the island. 

As the three adventurers set out on their expedition, they each carry a wooden stick to aid them in testing the stability of the shifting sands. As Xola, the first one in the line of friends, steps onto the sandbar, the water level reaches her ankles. With every step forward towards the island, the water level rises proportionate to the gentle slope of the seafloor. Amari, following closely behind Xola, is a bit taller and notices that the water still covers his ankles even though he is stepping into Xola's footprints. Niran, the tallest among them, is the last one in the line, and even as she steps into the deeper water, it seems that the water level remains at her ankles too.

Suddenly, Xola comes to a halt, noticing a set of peculiar shells partially buried in the sand. Xola and Amari bend down to inspect the shells, submerging their hands to dig them up. They momentarily lose sight of the island as their focus shifts entirely to the shells with their heads now at the level of the sandbar. Niran, however, being further back and still standing, can see over Xola and Amari and still has a clear view of the island.

The children quickly realize that their path is not exactly straight and that they will need to make a slight turn to the right to stay on the raising sandbars rather than wading into deeper waters that would submerge their chests or even their heads. They discuss their strategy and agree to follow Xola's lead since she's at the front.

Given this scenario, what would happen next in terms of what each child can see, taking into account their positions, their heights, and the rising sea level? How would the view of the island either become obstructed or revealed as they change their formation and move along the curving path of sandbars?
As Xola, Amari, and Niran continue their journey across the sandbars to the island, several factors will influence their visual perspectives, depending on their heights and the curvature of the path. With the rising tide, the water will gradually climb higher on each child's body as they progress along the gently sloping seafloor.

Since Xola is leading the group and is the shortest, she may be the first to experience a reduction in visibility of the island. She is focused on navigating and may likely align her gaze with the surface of the water while looking for the safest path forward. As they curve to the right, the angle at which Xola looks forward would naturally lower, preventing her from seeing much beyond the immediate stretch of sandbars directly ahead. 

Amari, a bit taller than Xola, initially shares the same line of sight when following in Xola's footprints. However, as they navigate the curve, Amari would have a slight advantage in visibility compared to Xola due to his additional height. Moving to the right, with the water level rising up his body, the horizon of his view would also start to be limited. He might catch glimpses of the island intermittently but wouldn't be able to keep a constant watch unless he actively changes his position relative to Xola to find gaps in the sightline.

Niran, being the tallest, retains the most consistent view of the island throughout this maneuver. While Xola and Amari's sightlines are impeded by the curvature of the path and the rising water, Niran can look over their heads. However, if Niran remains directly behind Amari, her view can still be obstructed by his body. To maintain an unobstructed view, Niran may adjust her position slightly to the side of the formation. From this vantage point, Niran would be able to guide the others by watching out for shifts in the depth or direction of the sandbars they're following.

The dynamic nature of the shallow water around the sandbars plays a role in how the children perceive their environment. While the lower parts of their bodies would likely become submerged as the water deepens around the curving path, their upper bodies would remain above water. Depending on their relative heights and positions, each child's view of the surrounding waters and the distant island would be differently obstructed or revealed as they navigate the tidal sandbar path.