When viewed through a mask underwater, objects appear to be:

When viewed through a mask underwater, objects appear larger and closer due to the principles of light refraction. Light travels at different speeds in water compared to air, which causes it to bend when it passes from one medium to another. This bending of light results in an optical effect that magnifies the appearance of objects.

Additionally, the proximity of the mask lens to the eyes creates a smaller gap that allows for a more precise focal length, further enhancing the perception of size and distance. As a result, divers often report that objects seem larger and more immediate when viewed through their masks.

This phenomenon is significant for divers as it affects their depth perception and spatial awareness while underwater. Understanding this aspect of diving can contribute to better navigation and interaction with the underwater environment.