In a small coastal village, a group of friends decides to explore the nearby beach. Among them are Kehinde and Leilani, who, while tide pooling, stumble upon a curious phenomenon regarding perspective and spatial reasoning. As they wade into the water, they notice how the water level rises against their bodies. Kehinde, who is taller, wades into the water until it reaches his waist. Leilani, being shorter, must wade in deeper to reach the same water level against her body. At this depth, only their upper bodies are visible to someone standing on the shore. Jia, another friend who is watching from the beach, observes that they both appear to be the same height from her vantage point, given that only their upper bodies are visible above the water line.

The friends then decide to play a game of hide-and-seek along the shore. Leilani wades into the water until it reaches her shoulders, while Kehinde remains on the beach. Jia, who is it, closes her eyes and begins counting to one hundred. Meanwhile, Leilani submerges herself further so that the water reaches the tip of her chin, trying to make herself less visible.

With the background of the rising and setting sun, the shadows of the friends stretch long across the wet sand. The question arises: given the way the light casts shadows and the water level on Leilani's body, what parts of her will be most visible to Jia from her position by the time she opens her eyes? As Jia sees the shadows and looks towards the sea, will the waning light affect her ability to distinguish Leilani from the water's reflective surface, and how might the water's magnification property influence what she sees?
When Jia opens her eyes and looks towards the sea to find Leilani, she will see the most visible part of her friend, which will be the area above the water line - her head from just above the chin, up. The water's surface will hide the rest of Leilani's body.

Although the water does exert a magnifying effect due to refraction, this effect will only be noticeable for objects submerged directly under the surface. Given that Leilani has submerged herself up to her chin, this magnification effect will have little impact on what Jia will be able to see, as it does not elevate Leilani's submerged body parts above the waterline. However, it might make Leilani's chin appear slightly larger or closer than it actually is.

The setting sun can contribute to visibility difficulties. As the shadows grow longer, there might be less direct sunlight on Leilani, potentially making it harder for Jia to see her against the reflective surface of the water, which might be gleaming with the sun's golden hues. This combined effect of diminished lighting and reflective glare could reduce Jia's ability to visually resolve the details of Leilani's face.

Moreover, Leilani's shadow will be cast along the shore behind her rather than across the water, meaning Jia won't be able to use the shadow to help determine Leilani's location. The shadow in the water could be diffused and not provide a clear outline for Jia to easily identify Leilani.

Ultimately, Jia's best chance for spotting Leilani would be to distinguish her friend's head and face from the shifting patterns of light and shadow on the water's surface, while accounting for the distortion that might come from the water's magnifying properties and any glare caused by the setting sun.