ScienceDaily reports
The ocean is a big place with many deep, dark mysteries. Humans have mapped no more than 20% of the sea, and explored less. Even the kelp forests of Southern California — among the best studied patches of ocean on the planet — hide species not yet described by science.
Read more about the discovery at Four new species of sponge that lay undiscovered in plain sight — ScienceDaily
Natural History Wanderings 
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