During a month long meander across the state of Oregon, I found myself inside of this cave in Oceanside, OregonI worked on this composition for awhile. The tide was coming up, and was just high enough that when a surge came in, the water would trickle into this pool, and swirl around. Bits of foam were captured in the swirl, and using a long exposure, I was able to create these streaks from their paths.
Getting an even exposure inside of a cave, with the camera pointing at an extremely concentrated source of bright light is no picnic. Flaring was off the charts. In between surges in the water I would use my lens cap to cover the top half of the image, including the light source, to properly expose the bottom of the image, and then do the same, covering the bottom with the lens cap, including the opening in the cave. Then did a bracket for the opening. There was some flare that was unavoidable, as you'll notice the light spill coming from the opening, but I worked it in as a creative element. There was a strong glow to the eye anyway, so it works.