Comb jellies have a bizarre nervous system unlike any other animal
A 3-D map reveals fused neurons that lack the space, or synapses, most neurons use to communicate
Sea walnuts (Mnemiopsis leidyi) like these pictured are ctenophores, jellyfish-like animals that move by beating iridescent combs. Their nerve cells are fused together, unlike those of all other known animals.
Alexandre Jan