Best Limnomedusae
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Craspedacusta sowerbii is a small freshwater hydrozoan commonly called the freshwater jellyfish. Native to the Yangtze River basin in China, it has been introduced widely and recorded on every inhabited continent, often in lakes, reservoirs, ponds, and slow-moving water. Its life cycle includes a ti...
A hydromedusa that lives commensally on the tubes of polychaete worms in tropical and subtropical seas, making it one of the few hydromedusae with such a lifestyle.
A brackish-water hydromedusa native to the Caspian–Black Sea region, recorded as an invasive species in San Francisco Bay, California, since the 1990s.
A small hydromedusa first described from the brackish Lake Manzala in Egypt, since recorded in coastal lagoons and estuaries across multiple continents.
A freshwater hydromedusa native to South America, reported from rivers and lakes in Brazil and Argentina, belonging to the family Olindiidae.
