Siphons of octopi, squid, and cuttlefish jet through the water with directional control via jet propulsion.
"Octopuses, squid, and cuttlefish have a more sophisticated version of jet propulsion. They expel water through a moveable tube called a siphon, which combines power with directional control." (Downer 2002:17)
Learn more about this functional adaptation.
- Downer, J. 2002. Weird Nature: An Astonishing Exploration of Nature's Strangest Behavior. Ontario: Firefly Books.
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