A Sand dollar is an interesting creature and something that is intriguing. It may seem that these creatures don’t breathe or move, yet contrary to perhaps popular beliefs these creatures both move and breath.
From YouTube channel “Sea Something,” a girl in the video below shares the differences between both a dead and living Sand Dollar.
For those of us that grew up on the beach or spend summer breaks there, we may be familiar with a dead Sand dollar, we may have even throw them across the beach for fun. Identifying a dead sand dollar is simple, if the grooves under the sand dollar are evident then it is no longer alive. A dead sand dollar usually is a grey or light white, or a green and yellow color.
The alive Sand Dollar can clearly be distinguished in that it has a blackish and purple color. And creepily when you flip the alive Sand Dollar underneath you can clearly see moving bristles.
Sand Dollars feed on microscopic organisms. The bristles under the sand dollar grab these organisms and move it to the centre of the dollar where the mouth is found. I believe your appreciation for the Sand Dollar has grown just with the few insights presented here and in the video below.