There are 5,000 species of sponges.
Sponges vary in shape, color and size.
Most sponges live in warm and tropical waters. Sponges are treasures for bathing and cleaning. Sponges can reproduce both sexually and asexually. A small sponge can be 1 inch, while a giant sponge can be 4 feet in diameter. Water flows into the bottom of the sponge and out the top.