jellyfish

It was first grouped with squids and octopuses, then with sea slugs, jellyfish ancestors, and even worms.

Roz continued clicking, and the echoes returned more quickly and loudly each time, until she came across a huge jellyfish.

"I looked at each individual part, comparing its appearance to old tomes where scholars drew out the jellyfish anatomy by hand. A real challenge when you look at just how many tangled parts it has."

As he wound them in, the anchovies could barely be seen among the hordes of jellyfish and other fodder.

A swarm of jellyfish has caused major disruption at one of France's largest nuclear power plants, for the second time in a month.