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
IN THE SUNLIGHT ZONE IN THE ATLANTIC OCEAN
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.
no. a sand dollar is flat.
Yes sand dollar is an echinoderm.
The sand dollars live in sea on soft sandy sea beds. They are just washed ashore.
Click on the link for a picture on a different website.