Lesson 11 Worksheet

A creature with no arms that is completely covered in spines.
A creature with a mouth that faces upward toward the surface of the ocean.
A rounded body under the spine of a sea urchin. It can be seen when a sea urchin dies and loses its spine.
A crinoid's feelers
Creatures with spiny skin and tube feet, having no eyes or brain. Sea Urchins, sand dollars and starfish are in this group.
To re-grow parts of the body in order to recreate it as it was before.
A sausage-shaped benthic animal that has five rows of tube feet stretching the length of its body, enabling it to slowly move around the ocean floor.
An echinoderm found all over the ocean. It typically has five arms radiating out from a central disk and pushes its stomach out if its mouth to digest its prey.
A fast moving, sea star-looking creature with long, thin, fragile, snake-like arms surrounding a central disk.
Creatures that have feathery arms on top of cup-shaped bodies and are commonly called sea lilies and feather stars.
These make up the star pattern found on the underside of a sand dollar.
Feather star arms