Today,I will tell you about insects. Insect has only six legs. If it doesn't have 6 legs it is not an insect. I hate being an insect because you will be squished by a human waa! Find more information here Insects ( Class Insecta) are a major group of arthropods and the most diverse group of animals on the Earth, with over a million described species —more than half of all known living organisms [2] [3] —with estimates of undescribed species as high as 30 million, thus potentially representing over 90% of the differing life forms on the planet. [4] Insects may be found in nearly all environments on the planet, although only a small number of species occur in the oceans , a habitat dominated by another arthropod group, the crustaceans . There are approximately 2,000 praying mantis , 5,000 dragonfly species, 20,000 grasshopper , 82,000 true bug , 120,000 fly , 110,000 bee, wasp and ant , 170,000 butterfly and moth , and 360,000 beetle species described to date. Estimates of the ...