He and his colleagues were investigating the subject after a larval ctenophore suddenly appeared in the place of an adult ...

Experts have confirmed that it is a jellyfish-like organism called a ctenophore - also known as a comb jelly. They first emerged up to 700 million years ago - a long time before dinosaurs ...

We all lean forward, jostling each other to see. There. For a moment, a ghostly image of the ctenophore appears in the dish. An image made of bluish light that swirls and gradually dissipates ...

Reverse development in the ctenophore Mnemiopsis leidyi. (A) Experimental design for starved (above) and lobectomized (below) M. leidyi. (B) Imaging station to record morphometric changes over ...