Often it is the camera points that make a scene unrecognizable, abstracted from its true meaning. Underwater is continually true.
All the more so, when we talk about details, perhaps small creatures that are unknown to most.
It’s kind of exaggerating the concept of abstraction by starting with a natural element, capturing an angle of it that makes it difficult, almost impossible to interpret.
This is a type of photography where you can range with different kinds of equipment, even with functionality at opposite ends of the spectrum: macro and wide-angle, natural light and artificial light, close-up shooting (lens match) and distance shooting.
The goal is to seek the final image distant from its real meaning, the image that confuses and leaves the mind without certain understanding.
All immersion modes can be used, in my opinion.
For macro shots with artificial light, however, it is better to dive with tanks or a rebreather, which allows you to focus longer and better on small details.