Horizontial or vertical, depending on where you cut it.
Yes sand dollar is an echinoderm.
A sand dollar
Sand dollars.
Echinoderm
Sand dollar
Echinoderm
Class Holothuroidea (sea cucumbers)
Sand Dollar
Yes sand dollars are a kind of sea urchins that are flattened and can burrow itself.
echinoderm
A sand dollar was called a geopolitical dollar
The echinoderm with an endoskeleton made of a single crystal of calcium carbonate is a sea urchin. This endoskeleton is made up of many plates that fit together, forming a rigid structure that surrounds the sea urchin's soft tissues and protects it from predators.