We have reviewed the content of all resources listed below to be sure they are appropriate for supporting instruction. However, as the resources listed below are open-source materials, we cannot be held responsible for changes in content.
RESOURCES
This is a ThoughtCo. Website that explains what sand dollars and sea urchins are. The website talks about the shape of the animals and how they move as well as reproduction.
This is a BBC Worldwide video. It starts by showing kelp forests being attacked by sea urchins. The video continues through showing sea stars. It finishes by showing sand dollars trying to move out of the way of sea stars and being eaten by a sea star.