Almost every animal is vulnerable to old age. Some, like houseflies live short lives. Others such as trees can live thousands of years. A few animals are biologically immortal meaning that they suffer virtually no effects of old age.
Hydras, a small anemone like creature, do not age. They live in most freshwater environments and are common across the world. They use their tentacles to catch freshwater zooplankton.
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| scientific illustrator |
Turritopsis nutricula is an immortal species of jellyfish that can change into a juvenile polyp after reproduction. It is therefore immortal benefiting from a never ending cycle form juvenile polyp to adult plankton and back.
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| blogington |
Water bears are a type of water dwelling microscopic animal that is totally immortal. In addition they can survive the vacuum of space, radiation, extreme temperatures, and dehydration among others. Wheh!
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| mcdlifesciences |
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