In the new study, scientists observed a population of comb jellies kept in a seawater tank in the lab. Researchers spotted an ...

Experts have confirmed that it is a jellyfish-like organism called a ctenophore - also known as a comb jelly ... first animals - and they can still be spotted in oceans and aquariums today.

The biologist had just come from the first floor, where tanks held a colony of gelatinous comb jellies. The blob was bigger than others, and it looked as though two of the jellies had merged into one.