Sponges are aquatic animals that live attached to the bottom of the sea and feed on bacteria and other microscopic food by constantly filtering large amounts of seawater. We currently know more ...
There are over 9,000 described species of sponge (Porifera) living in the ocean, from the intertidal zone all the way down to the abyss. These animals have long been providing for their underwater ...
The glass fibers form a crown at its base that appear to help anchor the sponge to the ocean floor ... things that are not known to be visual animals yet we're finding these fascinating optical ...