The genera Crucigera and Serpula are represented in the Russian Far-Eastern seas by 3 species: Crucigera irregularis Bush, 1905, Crucigera zygophora (Johnson, 1901) and Serpula Columbiana Johnson, 1901. C. irregularis is recorded for the first time from the region. Serpula vermicularis Linnaeus, 1767 cited earlier by Russian investigators is in fact S. columbiana. Data on the ecology and distribution of these species in the Far-Eastern seas of Russia are given.
- Russian Far-Eastern seas