Saturday, October 20, 2012

#436 - SCIENCE | Sucker demons fly like some fish swim (7 videos inside)

What do sucker demons and electric eels have in common?
A flying red sucker demon springs into the air from a pile of clothes on the floor (notice the face of a blanket demon in the upper-right corner)
Besides the fact that they can both electrocute you, they also move themselves in the same manner, albeit one in the air (and your bloodstream and urinary tract) and one in the water, respectively.

For more information about this video, see VIDEO TIMELINE | Sucker Demon Flys into Apartment

Sucker demons—those 1- to 3-inch long, worm-like demonic entities that can become invisible, pass through walls, tow a trailer behind your car, electrocute you to death, and burn a hole through steel—fly like some fish swim.

For more information about this video, see VIDEO TIMELINE | Flying Sucker Demon Slinks Over Lamp and Sucker Demon Slinks Over Lamp During Fight

That is to say that, to fly, they use two types of locomotion that are analogous to two types of aquatic locomotion, namely, Body-Caudal Fin (BCF) Propulsion and—believe it or not—Jet Propulsion.

For more information about this video, see VIDEO/PHOTO | Flying red sucker demon

According to Wikipedia, there are three classes of fish that move via BCF propulsion. The class that best fits a sucker demon is the Aguilliform class, and is most likely employed when navigating through blood, mucus, urine, or any other body fluid, as well as any liquids outside the body (sucker demons are notorious for clogging toilets on purpose, so they spend at least some time in water pipes and drains).
Anguilliform swimmers are typically slow swimmers. They undulate the majority of their body and use their head as the fulcrum for the load they are moving. At any point during their undulation, their body has an amplitude between 0.5-1.0 wavelengths. The amplitude that they move their body through allows them to swim backwards. Anguilliform locomotion is usually seen in fish with long, slender bodies like eels, lampreys, many varieties of larvae, and oar fish. [Source: Wikipedia]
For more information about this video, see VIDEO | Sucker Demon Boards VTA Light Rail Car

Because this form of locomotion would not be enough to fly through the air for sucker demon—even with their uncanny strength and stamina—sucker demons use a form of marine locomotion called jet propulsion to move through the air.
Jet propulsion is a method of aquatic locomotion where animals fill a muscular cavity and squirt out water to propel them in the opposite direction of the squirting water. Most organisms are equipped with one of two designs for jet propulsion; they can draw water from the rear and expel it from the rear, such as jellyfish, or draw water from front and expel it from the rear, such as salps. Filling up the cavity causes an increase in both the mass and drag of the animal. Because of the expanse of the contracting cavity, the animal’s velocity fluctuates as it moves through the water, accelerating while expelling water and decelerating while vacuuming water. Even though these fluctuations in drag and mass can be ignored if the frequency of the jet-propulsion cycles is high enough, jet-propulsion is a relatively inefficient method of aquatic locomotion.
Hydrozoan medusae, which use a one-way water cavity design, generate a phase of continuous cycles of jet-propulsion followed by a phase of rest. The Froude efficiency is measured to be at 0.09, which shows a very costly method of locomotion. The metabolic cost of transport for the medusa is high when compared to a fish of equal mass. Other jet-propelled animals have similar problems in efficiency. Scallops, which use a similar design, swim by quickly opening and closing their shells, which draws in water and expels it from all sides. This locomotion is used as a means to escape predators such as starfish. Afterwards, the shell acts as a hydrofoil to counteract the scallop’s tendency to sink. The Froude efficiency is low for this type of movement, about 0.3, hence why it’s used as an emergency escape mechanism from predators. However, the amount of work the scallop has to do is mitigated by the elastic hinge that connects the two shells of the bivalve. Squids swim by drawing and expelling water through their siphon and into their mantle cavity. The Froude efficiency of their jet-propulsion system is around 0.29, which is much lower than a fish of the same mass. Squid swim more slowly than fish, but use more power to generate their speed. The loss in efficiency is due to the amount of water the squid can accelerate out of its mantle cavity. [Source: Wikipedia].

For more information about this video, see Sucker demons flee scene of red horde attack

There are seven videos in my collection showing sucker demons propelling themselves through the air, six of which are shown in this post; the seventh (shown below) is probably the most impressive and visible demonstration of sucker demons flying through the air:
Over a dozen white flying sucker demons can be seen in VIDEO | Swarm of sucker demons invades bathhouse in second sex video
Regrettably, it contains X-rated content, which is not suitable for anyone under the age 18, and for those who do not consent to viewing adult material.
NOTE | If you are over the age of 18 and consent to viewing adult material, you may view the flying sucker demons at VIDEO | Swarm of sucker demons invades bathhouse in second sex video.
All of the videos seem to show that, even with two forms of locomotion available to it, the sucker demon's flying range is quite limited, hence the frequent and ubiquitous use of wormholes (and, yes, that's how wormholes got their name).