The famous animal the "Porifera", has 6 body openings.
Adult echinoderms only have one body opening. Their larvae have two.
The mollusca have two body openings, the mouth and the anus are separate
Just one, called the pharynx.
2 2
3
4
Reptiles have 2 body openings. Mouth and an anus.
2
4
7
1
12
2
Why are you looking for an opening?
An animal that is not in the phylum Mollusca is a spider. Spiders belong to the phylum Arthropoda.
Ostium.
12 i think
mollusca(phlum)