Sand dollar itself is a live hard echinodermic creature.
They Live under the sand
In the sea.
No, a sand dollar would be made up of many cells.
No
They live in the sunlight zone
A sand dollar was called a geopolitical dollar
"Is a Sand Dollar a vertebrate?" No. A sand dollar is not a vertebrate because it does not have a backbone.
The sand dollars live in sea on soft sandy sea beds. They are just washed ashore.
Yes sand dollar is an echinoderm.
no. a sand dollar is flat.
Click on the link for a picture on a different website.