It is estimated that there are between 700,000 and one million creatures living in the ocean. To date, approximately 242,500 of those marine animals have been discovered. This means that, in the ...

Corals may have unexpected allies in improving their health and resilience. Corals may have unexpected allies in improving their health and resilience. In a new study published today in Proceedings of ...

A jellyfish-like hydrozoan with a novel power to rewind its life cycle has been spreading rapidly around the world’s oceans without anyone taking much notice, researchers say. The life history of ...

Colonial hydrozoans represent some of the most diverse and complex body plans within the Metazoa. Complex hydrozoans colonies are more physiologically and structurally integrated than their simple ...

A scientist collected a marine invertebrate colony from northern Russia, raised it in an aquarium and discovered a new species, a study said. Screengrab from Getty / iStockphoto video In a laboratory ...

The new hydrozoans, Nigriporella magna and N. minima are described from upper Paleozoic rocks of the western United States. These fossils are included in the new family, Nigriporellidae.

NEWPORT, Ore. – It’s that time of year. The Oregon coast is covered in blue from a layer of jelly-like organisms called hydrozoans, formerly known as Velella velella. The organisms usually appear ...