Almost by chance, researchers in Norway found adult comb jellies reverse their development and become larva again when stressed by starvation. It helps them survive because larva eat less than the ...

As long as that may sound, nothing compares to another kind of Cnidarian, a jellyfish, or more specifically, Turritopsis ...

They found that when adult Turritopsis dohrnii jellyfish were stressed, they reverted to an earlier stage in their life-cycle — rather than die. Normally, the adults (medusae) release a free-swimming ...