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so they never eat edit
But they develop a suction mouth with sharp teeth which they never use .... Is it possible they've gone millions of years with a mouth they have no use for, and never evolved it away? 3¢soap3¢ 05:02, 7 May 2013 (UTC)
- I realize Im replying to myself here, but I wanted to write my thoughts. Since the perverse development of teeth precisely when they're least useful happens only after they've reproduced (and never will again), it presumably can't affect their evolutionary fitness at all. It could just as well be that lampreys all swim towards Halley Research Station, Antarctica after they've spawned and even though none of them will ever make it there, they were all doomed anyway, so nothing really matters. It seems strange to humans because humans interact with other humans even after they've finished reproducing, whereas lampreys and some other fish essentially have fulfilled the purpose of their lives and have nothing else to do. —Soap— 02:26, 11 October 2014 (UTC)