This post is all about fishes! (With some doom n gloom thrown in, of course)
First! Scientists have been watching some ciclids evolve in Lake Victoria! From what I understand (I didnt read the journal article, but I DID download it!), some of the fishes are changing to a reddish color, thus have red pigmented eyes and can better see red? And other fishes are turning bluer. The strange thing is that both populations are in contact with one another, and that this selection is occurring by female preference towards the colorful males. In any case, fully expect a crazy fundie person to claim that they made up the data and that proof of evolution in process has to be false! (BTW, that whole sequence of articles is highly entertaining. The back-and-forth between the prof and the crazy person, etc)
Second! Some sweet-ass fishes that live 5 miles beneath the surface of the ocean! They were captured on video tape swimmin' around and bein' cute, much more actively than you would expect these deep-sea fishes to be. These are the deepest fish ever captured on tape! They "see" with little vibration sensors on their noses. They kind of look like big tadpoles. Anyway, the incredible thing about them is the PRESSURE on their little heads! I personally calculated the pressure at 7.7 km for you, and I came up with roughly 746 atm! OR 75561325 Pa! Which is nearly 11000 pounds per sq inch!!!! Amazing adaption. (You are all free to check that calculation. I readily admit I do not often do fluid statics calcs) I also want to mention that when they tried to bring one up to the surface a while ago, it died before it got there, so maybe it NEEDS this pressure, OR they weren't very gentle with it on the 5 mi elevator ride up!
Anyway, SUPER CUTE! Like little gollum fish!
Heres some doom n gloom to damper all the cuteness. Apparently the world will be "extinct" by 2050. All these poor fishes MAY live through the environmental catastrophe we have caused. Those ciclids might make it, since they're also evolving. Anyway, seriously, stop consuming, people!
07 October 2008
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