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

Jellyfish are 95% water, appearing different in water than out of it. Lifespans vary, with some jellyfish living only hours ...

Hydra are a stand-out example of the phenomenon, but they aren’t necessarily unique in their resistance to time. A handful of ...

Marine animals like jellyfish, corals and sea anemones often live with algae inside their cells in a symbiotic relationship. The animals give the algae nutrients and a place to live; in return, algae ...

So reliant is the hermit on its cnidarian ‘bodyguards’ that it removes them from the old shell during house moving and relocates them on to the new one! This appears a mutualistic relationship, both ...

Any aquarium environment must meet some exacting needs and it’s equally important that the existing species mix of your system doesn’t fall prey to this feisty cnidarian. The Giant carpet anemone ...

Marine animals like jellyfish, corals and sea anemones often live with algae inside their cells in a symbiotic relationship. The animals give the algae nutrients and a place to live; in return ...