Found this link on a diveforum, and thought some here might want to see it. Think it's new to this forum since I couldn't find it while searching...
Edited by Grayscale, 14 June 2009 - 01:43 PM.
Jump to content
Posted 14 June 2009 - 05:13 PM
Posted 14 June 2009 - 05:20 PM
Posted 16 June 2009 - 07:03 AM
Lumix GX8 in Nauticam, Canon 5DMkII in Aquatica, 1DsMkII in Seacam, G15 in RecSea...Inon Z240's...too many lenses
"If at first you don't succeed, try, try again. Then quit. No use being a damned fool about it." WC Fields
Posted 16 June 2009 - 08:26 AM
Optical Ocean Sales.com
Nauticam, Subal, Sea & Sea, Olympus, Seacam, Gates, Ikelite, Zen, Fix, 10Bar, Kraken, Light & Motion, iTorch/I-DAS & Fantasea Line
Cameras, Housings, Strobes, Arms, Trays & Accessories. System Packages. Photo Expeditions.
Blog & Gallery: Optical Ocean Sales Blog - Flickr Galleries: Optical Ocean on Flickr
Posted 16 June 2009 - 10:15 PM
Well, according to the presentation the snapping speed is 20m/s. A .22 caliber bullet goes 330 m/s. The mantis shrimp, while fast, is no bullet. Similarly, I am pretty sure that a .22 cal bullet has quite a bit more energy behind it. The mass of the .22 caliber slug is between 2 and 4 grams. I don't know what the mantis shrimp smasher arm weighs, but I would be very surprised if it was this much especially since it isn't made of lead. The energy expended is 1/2 m v^2 and since both the bullet mass and velocity are higher than the shrimp, it is pretty clear that the bullet wins on all counts. Still the mantis shrimp is a very impressive creature. I really enjoyed the lecture and loved the info about the induced cavitation bubble that creates a second strike.
Supposedly hits with the speed and force of a .22 cal bullet.
Edited by drsteve, 16 June 2009 - 10:18 PM.
Canon EOS 5D3, Aquatica Housing, Inon Z220+Z240 strobes, Sea&Sea TTL, ULCS Arms
Posted 17 June 2009 - 07:09 AM
Another fun fact about them is that while humans have three different types of color sensors in our eyes (which gives us a three dimensional color space i.e. RGB), the mantis shrimp has 7 distinct color sensors which gives it a 7 dimensional color space. It can distinguish between many colors that look identical to us. In other words we are all extremely color-blind compared to the shrimp!
Posted 30 June 2009 - 04:47 PM
Posted 30 June 2009 - 08:08 PM
Posted 27 December 2010 - 12:13 PM
That was cool but I thought that the 22 analogy was for another crustacean that snapped its claw together creating a percussion which would render pray unconscious.....can't recall the name though.
Posted 12 February 2011 - 10:59 PM