Animal jellyfish Over 1.5 million living animal species have been described - of which around 1 million are insects - but it has been estimated there are over 7 million animal species in total. Journal · 09 · 26+♥ 354 Last update at 26 · 09 · by milo ‧‧‧ One of 7740Animal More in AnimalMore in Ocean Home Animal > Oceanjellyfish PIFTW