You are visiting the aquarium and your companion points at a strange organism in a tank. None of the signs shows a picture of the organism or its name. The docent (volunteer) at the aquarium tells you that they are not sure what the creature is but they know that when they placed it in the tank, the algae on the sides of the aquarium seem to have disappeared. The organism is round and spiny. It seems to move although slowly and it has what appears to be a row of tube feet on its underside. Can you figure out what Kingdom and phylum it may belong to?

Question

You are visiting the aquarium and your companion points at a strange organism in a tank.  None of the signs shows a picture of the organism or its name.  The docent (volunteer) at the aquarium tells you that they are not sure what the creature is but they know that when they placed it in the tank, the algae on the sides of the aquarium seem to have disappeared.  The organism is round and spiny.  It seems to move although slowly and it has what appears to be a row of tube feet on its underside.  Can you figure out what Kingdom and phylum it may belong to?

wolfe8 · Answer

Can you look up how animals are put into kingdom and phylum?