Placozoa are small, single-celled organisms that measure between 0.2 and 0.5 millimeters in size. They are colorless and lack any distinguishing features. Placozoa are found in shallow waters, such as tide pools, and live on the surface of rocks and other hard surfaces. Their lifespan is unknown, but they are believed to reproduce asexually. The current population of Placozoa is unknown, but they are believed to be rare.
Name Origin: The organism Placozoa was first discovered in 1883 by German zoologist Franz Eilhard Schulze. The name Placozoa is derived from the Greek words "plax" meaning "plate" and "zoon" meaning "animal". This is due to the organism's flattened, plate-like shape.
Related Species: Trichoplax adhaerens, Trichoplax reptans