Arachnids, crustaceans, and insects do not contain blood but hemolymph instead. In the case of insects, hemolymph does not play an important role in oxygen transport. Some common uses are: creating a hydraulic system, autohemorrhaging, and gluing themselves to other animals. – WTF Fun Facts
Source: https://www.scientificamerican.com/article/how-is-bug-blood-differen/
Arthropleura is an extinct species of millipede that existed 360-299 million years ago. The insect is estimated to have reach the length of 2 meters (6.6 feet). – WTF Fun Facts
Source: https://www.britannica.com/animal/millipede#ref1116822
There are tiny insects called spittlebugs that create foamy bubbles on a plant which insulate them from heat and cold, keep them moisturized, and hide them from predators. – WTF Fun Facts
There are silverfish in the desert that don’t need to drink as they can absorb moisture from the air through their anus. – WTF Fun Facts
Source: https://australianmuseum.net.au/blog/amri-news/dna-barcoding-sheds-light-on-cryptic-silverfish-species/
