They are different ages so that's hoe you know how old they are.
Sand dollar is like a starfish. It has a hard bony body covered by spiny skin. The skin has cilia, which helps in catching the organic material that comes near to feed on. There are male and female sand dollars seperately. Snad dollars live in a group on sandy sea beds. They are sometimes washed ashore. when threatened the sand dollars can burry themselves under sand.
In the sand
You can not cheat to get sand dollars. You have to work for it, or you have to buy it.
Echinodermata (like sea urchins, sea stars, and sand dollars)
Sand dollars.
sand dollars got there name because they are shaped like a coin and they dig themselves into the sand
Sand dollars breathe through a process known as diffusion, using their tube feet.
Sand dollars don't protect themself, they just sit their........ :)-
what is the sand dollars kingdom
No, sand dollars mainly eat small worms and algae.
Thier is five kind of Echinoderms, their is sea stars, brittle stars, sea cucumbers, sea urchins, and sand dollars.
Sand Dollars are about the size of a grown human hand when fully grown. They cannot eat humans.