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An orange puffball sponge among strawberry anemones on exhibit rocks

Orange puffball sponge

Tethya aurantia

Not on exhibit
Animal type
Invertebrates
Ecosystem
Kelp forest
Relatives
Red volcanic sponge, cobalt sponge, boring sponges; Phylum: Porifera
Diet
Bacteria, tiny particles and dissolved organic matter
Range
Southeastern Alaska to central Baja California, from low intertidal to 1,460 feet (440 m)
Size
Up to 8 inches (200 mm) in diameter

Meet the orange puffball sponge

The puffball sponge is spherical with a flat bottom and a rough outer surface that's orange to yellow in color. The body surface contains many tiny pores called ostia, where water carrying oxygen and small food particles enter the sponge. Waving flagella (whips) create a current that keeps the water moving. The water and waste exit the sponge through one or more much larger openings called oscula. On most species of sponges, the oscula are clearly visible. But you need to look closely at the orange puffball sponge to see them.

Did you know?

The body of a sponge is supported by a matrix of fibers made of a structural protein called spongin and an interlocking skeleton of spicules. High powers of healing and regeneration are within this sponge's sphere. When parts become infected, the puffball uses the spicules to isolate and shed the infected parts, then regenerate the lost parts.

Conservation

Sponges are an important part of the ocean ecosystem as a source of food for nudibranchs, chitons, sea stars, turtles, and some fishes.

Cool facts

  • A sponge's body is a collection of loosely connected and nearly independent cells. They have no organs and no tissues. These are the only animals that can put themselves back together again if broken.
  • Many biologists have been searching for the animal group that is the ancestor of all animals. When Mitch Sogin, a biologist at the Marine Biology Lab at Woods Hole, compared the genetic blueprint of a sponge with those of other animals, he discovered that all animals with more than one cell are based on a sponge's genetic blueprint.
  • Scientists have described and named more than 5,000 of the probable 10,000 to 15,000 species of sponges, which come in various shapes and sizes.
  • Adult sponges are sessile, meaning they are unable to move on their own. They produce potent chemicals to defend themselves against other animals that try to overgrow, poison, infect or eat them. These chemicals don't harm the sponges themselves. They contain the same properties of anti-bacterial and anti-cancerous drugs that don't kill healthy cells. Scientists are researching these chemicals in hopes of finding new disease-fighting drugs.

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