The animal kingdom contains a vast array of animals capability of remarkable regenerative abilities, but known are quite as adept at this healing task than sea-swelling Cnidarians, such as hydra ...

Stinging cells, produced by cnidarians such as jellyfish and anemones, are one of ocean creatures' most effective defences. This method of protection can keep almost all predators at bay - but not the ...

These cnidarians are famous for their stinging abilities. The intensity of the sting varies by species. Some jellyfish can also generate their own light, called bioluminescence – further adding to ...