| Term | Definition |
|---|
| bilateral symmetry | two equal halves |
| radial symmetry | many lines of symmetry |
| detritus | dead decaying stuff |
| echinoderm | spiny skin |
| endoskeleton | inside support structure |
| exoskeleton | outside support structure |
| hermaphrodite | both male and female reproductive organs |
| invertebrate | no back bone |
| madreporite | opening used for water suction control |
| molting | shedding and exoskeleton |
| molt | an old exoskeleton that you got rid of |
| nocturnal | active at night |
| sessile | doesn't move much |
| telson | tail of a horseshoe crab |
| test | the endoskeleton of an echinoderm |
| crusher | holding and squeezing |
| shredder | tearing and cutting |
| spiny lobster | defends with antennae whips |
| tube feet | water powered suction and movement |
| filter feeder | collects plankton floating in the water to eat |
| arthropod | jointed feet |
| fiddler crab | males have one large claw |
| hermit crab | have weak exoskeleton |
| mantis shrimp | lightning quick reflexes |
| blue crab | has swim fin |
| spider crab | small body and long legs |
| decorator crab | a spider crab with fashion sense |
| snapping shrimp | stuns prey with sound |
| gulf shrimp | popular seafood option |
| cleaner shrimp | mutualism relationships with sea creatures for food and protection |
| krill | small shrimp-like crustaceans that congregate in large masses at the poles |
| barnacle | attached crustaceans that feed by waving legs |
| basket star | tangled coiled arms |
| feather star | looks like a plant or duster |
| aristotle's lantern | sea urchin mouth |
| sea cucumber | has less of an endoskeleton, but still has tube feet |
| sand dollar | flattened sea urchin with short spines |
| sea star | echinoderm with 5 to 30 arms, spiny skin, and tube feet |
Combine with other sets
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