I finally got the chance to dive in a halocline. Halocline is A halocline is a distinct vertical layer in a body of water where salinity changes rapidly with depth, creating a density difference between the water layers above and below. This density gradient forms a clear boundary between layers of different water densities, such as freshwater and saltwater, and can appear as a shimmering or blurry barrier to divers. Of course, Haloclines can be found in submersed caves, so make sure you are properly trained and certified before attempting it!