Generate Barrel Wave Surfer Selfies

A chaotic, high-shutter-speed action selfie of a surfer inside the barrel of a massive, heavy wave (Teahupo'o style). The camera is mounted to the board nose or held in a trailing hand, looking back at the surfer. The surfer is crouched low, one hand dragging in the water wall to stall speed. Their face is contorted in intense focus, eyes squinting against the salt spray. The wave lip is throwing over them, creating a cavern of dark, churning water. Technical Specs: Captured with a Phase One IQ4 150MP (in waterproof housing), 15mm fisheye lens at f/5.6. Shutter speed 1/4000s to freeze every droplet of the exploding wave lip. ISO 400. Lighting is natural sunlight filtering through the thickness of the green water (subsurface scattering). Real fluid dynamics: the water texture is glassy but turbulent. Skin shows salt crystals, zinc sunscreen, and wet wetsuit texture. 16-bit TIFF, raw optical realism.