DURING investigations on the invertebrates of Lake Tanganyika we have been able to find all the stages of the sessile generation of the well-known Tanganyikan Trachymedusan Limnocnida tanganyicae ...

How many species of jellyfish are there? Jellyfish are sometimes called sea jellies. They belong to a group called Medusozoa which is divided into four classes: Hydrozoa, Scyphozoa, Cubozoa and ...

told BBC News NI they are "quite different from the usual jellyfish you might find stranded on beaches". "These small, oval-shaped organisms, about 5-8cm long, belong to a group called Hydrozoa ...

Several Alabama residents have reported finding freshwater jellyfish in a local lake — raising questions about the origin of ...