It's a challenge to get the right elements to produced such image. Most of the time you'll be on a situation were you can't find any composition that will give you the appeal that you were after for and I never push everything just to get an output. I have days that I failed to capture any acceptable image but this one I almost gave up until that moment finally shows up.
One shot, no exposure blending, not an HDR either.
Filter: Hoya ND64 6 stops + Lee Pro Glass ND 0.9 + Lee 0.9 GND SE
Location: Whatipu Beach, Auckland, NZ