What are the classes of phylum porifera and examples?

Answer 1

There are four classes in the phylum porifera. The following are the classes with example.

1. Calcarea. E.g - Clathrina clathrus
2. Hexactinellida. E.g - Venus flower basket.
3. Demospongiae E.g - Red encrusting sponge.
4. Homoscleromorpha E.g - Oscarella lobularis

Answer 2

Some common examples include sponges.

Here is one example:

Cinachyra allocladia, the yellow ball sponge.