I hope so...
complete. The crayfish has both a mouth for ingesting food and an anus to expel the waste.
Jellyfish only have one opening, it's mouth. They not only ingest food through it, they expel waste through it also.
The structures that enable planarians to expel liquid waste are normally pores. The pores are found on the dorsal surface of the planarians.
Snails decompose bugs and turn the waste from the bugs into soil.
They Expel Waste
they expel waste
by its mouth
inside the snails mouth is a tongue called the radula
They have no anus and expel undigested matter through the mouth.
A shell, a psuedopd (the "foot" on the bottom of a snail), and only one hole where a mouth would be except everything goes in and out through here including food, waste, eggs and drink.
They take in oxygen, and expel Carbon dioxide as a waste product.
Yes, all animals defecate. They have to eat, and expel waste.