The Quiz: Sea stars are echinoderms—a term that means ‘having skin like…’
A A hedgehog
B A grasshopper
C An elephant
The name combines the Greek words ‘echinos’ for hedgehog and ‘derma’ for skin, and refers to the sea star’s bumpy surface. The echinoderms also include sea urchins, sea cucumbers, and sand dollars.
The correct answer to this quiz is A hedgehog.