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 ...

One ocean-dwelling creature found in many tropic waters is known to be able to reserve its own life cycle, cheating death.

In a new study published today in Proceedings of the Royal Society, the scientists show how tiny hydrozoans, polyps smaller than one millimeter and commonly found in dense colonies on the surface 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 ...

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 ...

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 ...

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 ...

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.

In a laboratory aquarium in northern Russia, a fluorescent green sea creature with 14 tentacles moved about. It ate, grew and eventually reproduced. A patient scientist watched the process, ...

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 ...