from Instagram https://instagr.am/p/C2KqwzlLLhw/ via IFTTT

Wavy turban shell (Megastrea undosa). Alternating soaks in a 50% bleach solution and boiling water to remove the outer brown periostracum layer over 2 days. The brown-orange-cream coloring was fully revealed at the end of that process. I found the shell at a beach I’ve been to thousands of times in my life during the super low tide that comes opposite the King Tide. There may be more unseen than seen in our world.