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There is also the opinion that these rays could possibly be breaching by complete accident. Devil rays are incredibly fast, as they have no other form of defense other than their speed and agility. They can manipulate their bodies in the water with ease to both escape predators and catch a meal. If they are travelling at a rapid speed near the surface and don’t realise they are going to breach, the slight movements they make underwater could explain their acrobatic flips that are made when they jump from the water.
originally posted by: intrptr
Evolution, huh. More like jumping.
Wait, did that one have feathers?
Yes it is a jump, but it is interesting that the instinct doesn't allow that they should stop the swimming motion even as they are out of the water, although they might 'wave' a bit faster should they have been out of the water longer without forward motion.
Using ultra-high-speed video of 100,000 frames per second the researchers showed that the vocal folds remain completely still while ultrasound was coming from the mouse's larynx. "This mechanism is known only to produce sound in supersonic flow applications, such as vertical takeoff and landing with jet engines, or high-speed subsonic flows, such as jets for rapid cooling of electrical components and turbines," said Dr Anurag Agarwal, study co-author and head of the Aero-acoustics laboratories at Cambridge's Department of Engineering. "Mice seem to be doing something very complicated and clever to make ultrasound."
originally posted by: gunshooter
And nobody has asked yet, "Why is this in the Crypto Forum?"
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