[1] The only living species, Scleroplegma lanterna, is endemic to the waters around Cuba and St. Croix in the Caribbean Sea.

Oscar Schmidt, working in the Caribbean Sea, coined the type species Scleroplegma lanterna in 1879.

[4] Like all sponges, diapleurids are suspension feeders, primarily feeding on plankton and other suspended materials.

[4] Coronispongia confossa, a fossil species indigenous to Italy, was named by Vivianna Frisone and her team in 2016.

It would have inhabiting the middle and outer edges of shallow-water carbonate ramps with heterogeneous substrates.