Jellyfish -Jellyfish

Phylum : Cnidaria Class : Scyphozoa Classification : Invertebrate IUCN status : Not evaluated Lifespan ( in wild ) : One year Weight : Up to 2kg Body size : 2cm to 2m Top speed : 8km / h Diet : Fish , shrimp , crabs , tiny plants and even other species of jellyfish Habitat : Oceans

Range :Jellyfish have been around for millions of years , even before dinosaurs lived on the Earth . Pulsing along on our ocean currents , these jelly - like creatures be found in waters both cold and warm , deep and shallow and along coastlines , too . Some jellyfish are clear , but others are vibrant colours of pink , yellow , blue and purple . They be bioluminescent , too , which means they produce their own light !

Jellyfish have no brain , heart , bones or eyes . They are made up of a smooth , bag - like body and tentacles armed with tiny , stinging cells . These incredible invertebrates use their stinging tentacles to stun paralyse prey before gobbling it up