Monday, September 29, 2014

#69 The Archerfish

All over the world there are hundreds and thousands of animals, fish, insects, and plants that refute the Theory of Evolution. I’ve already shown that neither mutations nor natural selection is a process that can lead to new species (Proofs #27 and #35). But let’s spend a few minutes talking about a certain fish called the Archerfish that lives in Asia. After I describe its astounding abilities, involving the solutions to complex problems of physics, you’ll be convinced there was an intelligence behind its design and existence. It didn’t come about by accident.

The Archerfish has the amazing ability to shoot a jet of water out of its mouth and knock bugs and lizards off of low hanging branches so it can eat them.

Recent research was completed and published which reveals that its abilities are way more remarkable than they seem at first, although they are very impressive indeed at the beginning.[1], [2]

As I describe what the Archerfish is able to do, please try to imagine what Darwin would say is the process for the development of this species. Remember Darwinian progress is slow and gradual, taking place over many generations.

Researchers measured the distance the Archerfish could shoot its stream of water and it is a maximum of 6 feet 6 inches. Note that the average Archerfish is only about 6 inches long. They have a unique shape to their mouth and tongue and their gills squeeze the water out at high speed. How far can a human spit do you think? How accurate is the human? And remember that the Archerfish is shooting up.

Here is a link to a slow motion video (21 sec.) of an Archerfish in action. There are links to more videos in the footnotes below.[3]

The unique tongue and mouth shape allow the Archerfish to channel the water and control the stream driven by powerful gills. Since no other fish has anything like this ability, there is no clue about another species it could have come from. There are no fossils either to indicate a slow and gradual development. One quarter or one half of this ability is obviously useless. Natural Selection if it were true would not select for any of the intermediate steps.

Even more amazing is that researchers have discovered that the Archerfish can make adjustments according to the target it is shooting at. For example it can judge the distance to the prey and shoot closer or farther bursts of water. Due to the shape of its mouth, the water in the stream tends to gather at the tip of the stream into a glob so there is a greater mass to knock the bug off the branch. The Archerfish seems to be able to adjust the amount of water depending on the size of the bug.

Obviously some bugs are farther away, so the Archerfish has to be able to adjust the distance it shoots. But this presents a very complicated problem of physics. As the water travels through the air, gravity pulls down on it causing it to curve downward. The Archerfish has to be able to aim in a way that gravity is taken into account and perfectly adjust the angle and force to shoot the water over the distance required.

Here’s another problem the Archerfish overcomes. If you have a fishtank, you know that looking from air through the water surface causes “refraction” of the light, making the contents of the fishtank displaced from where it appears.[4] This also occurs looking out of the water. Somehow the Archerfish can account for the refracting property of the surface of the water and still aim accurately enough to hit its target on the tree branch.

How could the brain of the Archerfish ever evolve slowly over many generations to be able to do this without the whole species going extinct from lack of food? Just think of the odds of one single Archerfish mutating and acquiring this ability. That’s astronomical odds already. Then somehow that Archerfish has to mate and produce descendants that can do the same thing. This ability has to work correctly or it is useless. It cannot develop in slow stages over many generations.

The Archerfish somehow uses its tongue and a channel in the roof of its mouth to make a nozzle that gets the stream of water to gather together at the tip of the stream, making a bigger glob to attack the prey. Researchers calculated that the force of the water is about ten times the bug’s ability to hold on to the branch. The Archerfish is able to adjust the size of the glob to the size of the target.

“Furthermore, the time needed until water assembles at the jet tip is not fixed. Rather, it is adjusted so that maximum focusing occurs just before impact. Surprisingly, the fish achieve this by modulating the dynamics of changes in the cross-section of their mouth opening, a mechanism that seems to not have been applied yet in human-built nozzles." [5]

You are an intelligent being. Just imagine what effort and practice it would take you to learn how to spit like this. Could you get good at it? Now can you imagine a fish brain learning to do it all by accident. I can’t.

There must be God.

[1] Sumit Passary, No crosshair, no laser but archerfish always hits bull's eye. Guess why?,

[2] Peggy Gerullis and Stefan Schuster, Archerfish Actively Control the Hydrodynamics of Their Jets,

[3] Archer Fish Water Pistol - Weird Nature - BBC, (3min 27sec), 
     World's Deadliest - Fish "Shoots" Prey with Water, NatGeoWild, (1 min 52 sec),
     Archer Fish - Our Wild World - Amazing Fish Shoots Water Bullets at Insects, wildvisuals, (1 min 30 sec),
     Archer Fish Water Pistol - Weird Nature - BBC, (3min 27sec),

[5] Mary Beth O'Leary, Archerfish target shoot with 'skillfully thrown' water,

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