Where Do Sponges Come From?
Where Do Sponges Come From? The soft, absorbent, natural sponges used in baths are the skeletal remains of a marine animal. Biologists once
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Sponges
What Is a Sponge?
A sponge is an extremely simple kind of water animal with a soft, elastic skeleton. It has no head, mouth, or brain. Sponges hatch from eggs