They're called the aliens of the sea. And they could help point to new ways to investigate brain diseases such as Alzheimer's or Parkinson's.
The beautiful but little-known translucent animals called comb jellies can rapidly regenerate lost body parts. Some can even regrow a very rudimentary brain. In an in-depth look at the genes of 10 comb jelly species, researchers report that these mysterious creatures have evolved a unique nervous system in a completely different way than the rest of the animal kingdom.