God designed the sponge with the ability to draw water into its body through tiny holes. It then filters the water for food and oxygen before pushing the water out again. Sponges pump remarkable amounts of water. Many sponges produce toxic chemicals that keep predators from eating them.


  • The sponge’s shape comes from a skeleton that is made up of tiny spicules of hard minerals located throughout its body.
  • Sponges come in a variety of shapes such as tubes, spheres, and threads.

Fun Facts

  • A sponge has no organs, just specialized cells. They represent the simplest of animals.
  • A sponge digests its food within individual cells.
  • With no true tissues, the sponge lacks muscles, nerves, and internal organs.
  • Sponges have been found as deep as 28,000 ft (8,500 m).
  • New species of sponges are constantly being discovered.

CLASS: Three classes: Hexactinellida (glass sponges); Calcarea; and Demospongiae
ORDER: Varies depending on class
FAMILY: Varies depending on class
GENUS/SPECIES: More than 5,000 species

Size: Varies greatly
Diet: Plankton
Habitat: Coral reefs, rock reefs, and sunken ships in the western Pacific Ocean