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A friend of <scuba@uc*.be*.ed*> wrote: > ... a fish in a tank can embolize?? ... water in a deep holding tank on a floor below the display can get air saturated in it ... [then that water goes straight a long way up to the fish tank] ...] scuba <scuba@uc*.be*.ed*> replied on Fri 5 Aug 1994 23:54:41 -0700 (Subject: Bent fish, terrorist dolphins & human evolution...):- > ... when hydroelectric damns provide a spill way for salmon spawning. The damns ... elected to allow water to spill over the damn at certain overflow sites during the spawning season. The extra extra-gassious saturated water can cause problems for the fish when they rise from the depths below the damn. (1) How to fish manage that live in deep hyper-aerated water in deep plunge pools below natural high waterfalls? I suppose that the situation that he describes can't easily happen in the wild because the salmon when going upstream to spawn can't jump a waterfall (or dam) high enough to cause this bends risk for their offspring when they run to sea. (2) He presumably refers to salmon smolts. In Europe where the European salmon `Salmo salar' often survives spawning and returns to the sea and recovers, how are these returning `mended kelts' affected by this bends risk? (3) The swear word is `damn' (participle `damned'); the wall to hold water in is `dam' (participle `dammed')!! But often dams and the like are indeed often also literally damns, for migratory fish!
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