Sponge
Pictures

Sponge in the Caribbean sea around Bonaire.

Sponge on a rock

Coral reef with great yellow sea sponge at the bottom of tropical sea on a background of blue water, underwater

Coral reef in Caribbean Sea with Stove Pipe Sponge and Orange Elephant Sponge

The Barrel Sponge - Similan Islands - Andaman Sea, Thailand.

natural sponge on white background

Waste from the ocean helps sea sponges to survive.

Sponges reproduce by both asexual and sexual means.

Some deep-water sponges can live to be over 200 years old. They are one of the weirdest animals, being made up of unspecialized cells.