Most sea sponges do not hunt, do not sleep, and do not move to catch prey. They are neither nocturnal, diurnal, or crepuscular. The few species that are carnivorous trap prey with sticky threads or spicules, and tend to live in darkened caves where they feed around the clock.
No, sea sponges are not decomposers. Sponges are filter feeders.
no sponges are not unicellular.
no sponges do not have bones
No, sponges are not parasitic.
Sponges are asymmetrical, although a few species have nearly radial symmetry.
To answer your question no sponges do not hibernate
No. Sponges are animals, which are heterotrophic.
Yes sponges have organs.
No sponges lack organized multicellular organs, such as nerves and muscles.
No, the word 'nocturnal' is an adjective, a word that describes a noun: a nocturnal creature, a nocturnal scene.
Beavers are nocturnal and diurnal (awake during the day, or "non nocturnal", which is not the proper way to say it). Primarily, nocturnal though.
If you're talking about kitchen sponges, they do not have cells. However, sea sponges have cells.