Photo by scientist, wildlife photographer and filmmaker Stefan Siebert. |
Learn how the Sea Sapphire does this amazing trick in this article in Deep Sea News:
"...a sea sapphire’s color has more in common with an oil sheen than a pigmented jewel. Combine this nifty trick with the sea sapphire’s impressively transparent body, and you have an animal as radiant as a star in one moment, and invisible in the next."