Tube sponge
From Simple English Wikipedia, the free encyclopedia
A tube sponge is a type of sponge found in the sea. Tube sponges have hollow tubes and comes in a wide variety of colors. They are living creatures, although people often mistake it for a plant. A tube sponge is made up off millions of tiny cells that are formed into a tube or bowl. The cells help pump water through the tubes which then captures microscopic plankton for food. Tube sponges can live up to 200 years old.
