How does the yellow perch control roll, pitch, and yaw when it swims?
470118
an internal swim bladder gives the fish neutral buoyancy which makes it very easy for it to manoeuvre
534311
in addition the swimbladder helps maintain position in water and is controlled by a gas gland while labrith helps breathe in oxygen depleted water
114605
Having gills is prerequisite for being a FISH, dear. In fact, their scales secrete a gunk that acts as a laxative. Yes, they have a swim bladder, but it works more like a shark's liver than a typical swim bladder.
143334
i think its because of the air pressure. the air drags the feather up? i think
210456
well u need to set ur braking system on the reel it should be on the side with the crank  its a little knob . and the best way i have found out to set mine is by tying on a lure and click the button and watch to see how fast ur line falls and adjust it so u can hit the relese and the bait falls really slow and work with it that way for a while and then adjust it as u get better
189839
I was on the pier fishing on the bottom. If you fish you know that you have to keep the line tight so you can feel a fish when he bites. Suddenly a bird flew around us who were fishing ,hovered over my line and landed on it, kinda like on a clothes line.It continued to set there long enough for a man to take 4 flash pictures,it was nightime, then the bird flew away and I turned to ask the man to send me a copy of the pictures but he was gone also.Just that quick.
497971
try using some bird netting along the outside of the dock.  Excpt for where you need to get through.
1184219
an extra floatation device for added safety
1183914
Here is your answer:\nhttp://en.wikipedia.org/wiki/Rudder
695162
They COD if you're not careful.  PLAICE them in a shaded area. They like music - it's calms them as long as it's on pitch - get a piano TUNA if necessary. Don't play it too loud though - it could be a bit of a SHARK to their system  They are partial to modern art too - particularly Jackson POLLOCK!\n\nDid you ask this question on PORPOISE to get answers like this? Would you like me to FINish now?  Or should we KIPPER line of communication open? If so, you'll be HERRING from me again shortly!
877409
Hi,\n\nGalileo was faced by similar queries and this is his response:\n\nShut yourself up with some friend in the main cabin below decks on some large ship, and have with you there some flies, butterflies, and other small flying animals. Have a large bowl of water with some fish in it; hang up a bottle that empties drop by drop into a wide vessel beneath it. With the ship standing still, observe carefully how the little animals fly with equal speed to all sides of the cabin. The fish swim indifferently in all directions; the drops fall into the vessel beneath; and, in throwing something to your friend, you need throw it no more strongly in one direction than another, the distances being equal; jumping with your feet together, you pass equal spaces in every direction. When you have observed all these things carefully (though there is no doubt that when the ship is standing still everything must happen in this way), have the ship proceed with any speed you like, so long as the motion is uniform and not fluctuating this way and that. You will discover not the least change in all the effects named, nor could you tell from any of them whether the ship was moving or standing still. In jumping, you will pass on the floor the same spaces as before, nor will you make larger jumps toward the stern than toward the prow even though the ship is moving quite rapidly, despite the fact that during the time that you are in the air the floor under you will be going in a direction opposite to your jump. In throwing something to your companion, you will need no more force to get it to him whether he is in the direction of the bow or the stern, with yourself situated opposite. The droplets will fall as before into the vessel beneath without dropping toward the stern, although while the drops are in the air the ship runs many spans. The fish in their water will swim toward the front of their bowl with no more effort than toward the back, and will go with equal ease to bait placed anywhere around the edges of the bowl. Finally the butterflies and flies will continue their flights indifferently toward every side, nor will it ever happen that they are concentrated toward the stern, as if tired out from keeping up with the course of the ship, from which they will have been separated during long intervals by keeping themselves in the air. And if smoke is made by burning some incense, it will be seen going up in the form of a little cloud, remaining still and moving no more toward one side than the other. The cause of all these correspondences of effects is the fact that the ship's motion is common to all the things contained in it, and to the air also. That is why I said you should be below decks; for if this took place above in the open air, which would not follow the course of the ship, more or less noticeable differences would be seen in some of the effects noted.\n\nAlthough, this seems obvious to us now in its day it was quite startling. But it is the same for an Astronaut on a space walk. His craft appears stationary to him, although both he and it a traveling at great speed. So, we judge that something is moving only by its movement relative to us or some other object.\n\nThis, if you like, is Galilean relativity, we judge objects to be moving only if they are moving relative to our frame of reference.
257035
It's called an aileron. It's a flap on both wings. If the plane wants to turn left (technically, roll left), the left aileron goes up and the right aileron goes down.\n\nAlso, the rudder on the tail controls the yaw. It acts basically like a boat rudder.\n\nIn case you were wondering, roll is the rotation of the plane on an axis going through the cabin. Yaw is the actual turning of the plane. Both must be used to turn smoothly, otherwise you'll have spilt drinks everywhere.
685422
I don't really know, but I wanted to tell you that this is my favorite all-time question on this site.\n\nI WISH I knew how to rudder-fy a duck--I'd really love to help you out with this one.\n\nI do have a question though--if the duck didn't swim in circles (or at least ovals) wouldn't the duck crash into the side of the tub?\n\nThanks for posting this this morning.
865523
All fish swim with their mouths open at least a little. This is a big part of how water gets to their gills so they can take in oxygen and get rid of carbon dioxide.
881373
The swim bladder controls the buoyancy of the animal. Normally the amount of gases in the swim bladder keeps the fish neutrally buoyant, and they can regulate these gases to go up or down in the water column.\nThis saves energy because the fish doesn't have to swim actively to stay in one place; even though their tissues are denser than water, they won't sink because the less dense gases compensate for this.
987046
http://www.watertiger.net/RO/how_ro_works.htm\nyou find it here
571359
Everything is bound by the laws of physics. \n\nUpon contact of the cueball to the object ball, try imagining a line that connects the center of both balls- call this "line A". Then imagine another line that connects the cueball's current position(in contact w/ object ball) and its original position-call this "line B".\n\nPlay the scenario:\nAs the Cueball hits the object ball, the object ball move along the path we marked as "line A". The white ball will then be taking the path perpendicular (90degrees) to "line A" but going away from "line B". This perpendicular path is called the "normal angle".\n(This scenario only applies when you hit the cueball at its center)\n\nCurves:\n- You can apply a "spin" reaction on the cueball so that the cueball wont be moving along the normal angle. Hitting the cueball above the center will force it move forward after the impact. Similarly, hitting it below the center will cause it to draw back after the impact; or if it was a straight ball impact, hitting it just SLIGHTLY below the center will stop the cueball dead after impact. Hitting the cueball left or right will imply a left or right spin on the cueball AFTER IT HITS A CUSHION after making impact on the object ball. Now, you can combine these 4 basic spins to create top-left or bottom-right spins, etc. This is called controlling the cueball or positioning for the next shot. But that's for another chapter. Try learning the basics 1st.