"The ability of a dragonfly nymph to successfully snatch and grab food is directly related to its anus. The mouth-grabber (labium) is hydraulically activated. The dragonfly draws water in through the anus, clenches, then compresses its abdominal and thoracic muscles against the water-filled rectal chamber. This raises the internal body cavity pressure, and pushes the labium out –in a strike that takes 10 to 30 milliseconds.”
Gwen Pearson, Here Be Dragons Wired Science
Dragonflies are my favorite. Go look at the rest of the pictures!
Never seen this happen before. This is incredibly badass
Dragonfly nymphs breathe through their butts, as well (their gills are located inside the rectum). They also move via jet propulsion by sucking a whole bunch of water in their butts and expelling it out super fast.
So, basically, dragonflies know how to utilize their rear ends, to say the least. They are so freaking bad ass (pun intended).
I really miss having my aquatics tank. Maybe I’ll revive it this summer…