THe Digestive system
The Sand Dollar exhibits a complete digestive system containing a mouth, gut, and anus. The digestive systems of the Sea Urchin and the Sand Dollar are almost identical except for the shape of their bodies. Almost every species of Sand Dollars are deposit feeders. They process sand to feed on detritus in the sediments. Some sand dollars have jaws made of a circle of five plates that meet in the middle. Unlike the sea urchin, the Sand Dollar can not extend its jaws outwards.
The Sand Dollar has a digestive system that is very opposite from the human's, well obviously we are very different species, but also in that the Sand Dollar's mouth is on the bottom of the body, and the anus is at the top. The Sand Dollar uses the little tube "feet" that surround its body to breathe and eat.
The Sand Dollar has a digestive system that is very opposite from the human's, well obviously we are very different species, but also in that the Sand Dollar's mouth is on the bottom of the body, and the anus is at the top. The Sand Dollar uses the little tube "feet" that surround its body to breathe and eat.
The sand dollar's menu
This is what the Sand Dollar's diet is mainly composed of.
references
http://lanwebs.lander.edu/faculty/rsfox/invertebrates/mellita.html
http://animaldiversity.ummz.umich.edu/accounts/Echinarachnius_parma/
http://en.wikipedia.org/wiki/Sand_dollar
http://www.montereybayaquarium.org/animals/AnimalDetails.aspx?enc=Z5SIVkZ+n+VfIl75Mb+zkw==
http://www.mesa.edu.au/echinoderms/default.asp
http://animaldiversity.ummz.umich.edu/accounts/Echinarachnius_parma/
http://en.wikipedia.org/wiki/Sand_dollar
http://www.montereybayaquarium.org/animals/AnimalDetails.aspx?enc=Z5SIVkZ+n+VfIl75Mb+zkw==
http://www.mesa.edu.au/echinoderms/default.asp