They used to destroy water source blocks in a 3x3x3 radius, but now they do nothing.
You can go to a ocean monument and steal wet sponges and cook them to dry the
In all current versions (this includes beta), sponges do absolutely nothing. They were used in the classic (old classic, not new one) as a way to unflood places, as they created an area about 2 to 3 blocks around it that had no water. This was useful in the classic, because the water was inf. As inf. water was removed since, the use of sponges has, and so has the ability to get sponged legit. But, as the blook of the "sponge" was not actually removed, just the way to get it legit, you can still get it with inv. hacks.
It is only possible to move water by the use of buckets in creative. Even though sponges are an available item to select in the creative mode menu, they do not have the feature of soaking up water. That feature is only possible in Minecraft Classic.
No, sea sponges are not decomposers. Sponges are filter feeders.
no sponges are not unicellular.
No, sponges are not parasitic.
no sponges do not have bones
Sponges are asymmetrical, although a few species have nearly radial symmetry.
Yes sponges have organs.
No. Sponges are animals, which are heterotrophic.
To answer your question no sponges do not hibernate
No sponges lack organized multicellular organs, such as nerves and muscles.