Sponges, members of the phylum Porifera, are considered the oldest living animal phylum. The name Porifera means "pore bearer" in Latin. Sponges are the only animals that if broken down to the level of their cells can miraculously reassemble and resurrect themselves. These seemingly inanimate creatures are also fantastic pumps, filtering tons of water to harvest just a few ounces of microscopic food.
How do we know sponges were our ancestors? It turns out that all organisms in their genes carry clues to their evolutionary history -- a unique set of acquired genetic changes passed on through countless generations. This fact allowed Mitch Sogin to compare and contrast specific sets of genetic differences between sponges, flies, fish, frogs, humans and other organisms. He discovered that sponges, indeed, were the start of the animal kingdom and laid the foundation for all animals to follow.
Download our android app!
