Some sponges protect themselves and they don't even know it. Those sponges protect themselves by a hard outer layer of skin.
yes sea sponges.
yes, otherwise they would be extinct. No, but babies sometimes have ocean sponges.
Sponges protect themselves with spikes in their body.
ocean
sponges are use in washing plates,glass of water.some sponges are in/on salted water on the ocean floor.
Sponges displace the ocean's water, and the water that they do "suck up" becomes part of their volume, and thus has no effect on the depth of the oceans. When you remove sponges, they will no longer displace water in the ocean, so the ocean will actually be shallower.
sponges are naturally grown in the ocean floor and then harvested and dried to be used.
in the ocean
Animals that live in the ocean.
Spongebob Squarepants
Sponges in the ocean can live up to 200 years old. They are primary produces and give off more oxygen than they take in.