I hope so...
Jellyfish only have one opening, it's mouth. They not only ingest food through it, they expel waste through it also.
Snails decompose bugs and turn the waste from the bugs into soil.
by its mouth
The structures that enable planarians to expel liquid waste are normally pores. The pores are found on the dorsal surface of the planarians.
The crayfish digestive tract is complete. It consists of a mouth, esophagus, stomach, and intestine, allowing for the digestion and absorption of nutrients from food. The waste is eliminated through the anus.
inside the snails mouth is a tongue called the radula
They Expel Waste
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 have no anus and expel undigested matter through the mouth.
An octopus expels waste from its body through a single opening called the anus.
They take in oxygen, and expel Carbon dioxide as a waste product.
Every living thing has to expel its waste somehow.