Currently, only one species, Trichoplax adhaerens, is acknowledged to belong to the Placozoa. The Italian Francesco Saverio Monticelli described another species in 1893, which he found in the waters around Naples, naming it Treptoplax reptans.
A standard mallet has a head length of 9 to 9.5, and this is recommended for beginners. Expert players may use longer head lengths up to 12, as this is thought to make aiming more accurate and makes it harder to accidentally twist the mallet during the stroke.
The layout diagram below shows the dimensions of a standard sized Octopit with 8 foot long side rails. The diameter is 20 feet long, from rail to rail and 22 feet from corner to corner. These dimensions can be customized to accommodate your particular needs. Octopit USA Gaga Ball Pit Layout Dimensions.