What Colors Are Sand Dollars

Live sand dollars don’t look like those perfectly white “shells” you see in gift shops. The living creatures are much darker, usually somewhere between brown and purple. The white sand dollars you find are actually their skeletons, called tests.

What colors do sand dollars come in?

Sand dollars can vary from a deep brown to a purplish-red color when alive. After the animal dies, the sun causes its color to fade, and the skeleton eventually turns silvery-white. People thought the skeletal remains (called the test) resembled silver coin currency, which is how the name “sand dollar” came about.

Are live sand dollars purple?

Sand dollars are grey, brown or purplish when they are alive. After death, the color fades and the skeleton becomes very white. When they are alive, sand dollars secrete echinochrome, a harmless substance that will turn your skin yellow. Hold a sand dollar in your hand for a minute.