<P> Jellyfish or jellies are softbodied , free - swimming aquatic animals with a gelatinous umbrella - shaped bell and trailing tentacles . The bell can pulsate to acquire propulsion and locomotion . The tentacles may be utilized to capture prey or defend against predators by emitting toxins in a painful sting . Jellyfish species are classified in the subphylum Medusozoa which makes up a major part of the phylum Cnidaria , although not all Medusozoa species are considered to be jellyfish . </P>
<P> Jellyfish or jellies are softbodied , free - swimming aquatic animals with a gelatinous umbrella - shaped bell and trailing tentacles . The bell can pulsate to acquire propulsion and locomotion . The tentacles may be utilized to capture prey or defend against predators by emitting toxins in a painful sting . Jellyfish species are classified in the subphylum Medusozoa which makes up a major part of the phylum Cnidaria , although not all Medusozoa species are considered to be jellyfish . </P>
how do the stinging cells of a jellyfish aid their survival
how do the stinging cells of a jellyfish aid their survival
capture prey or defend against predators
capture prey or defend against predators