Most fish live underwater, which is a terrible place to have sex because virtually anywhere you lie down there will be stinging crabs and large quantities of little fish staring at you with buggy little eyes. So generally when two fish want to have sex, they swim around and around for hours, looking for someplace to go, until finally the female gets really tired and has a terrible headache, and she just dumps her eggs right on the sand and swims away. Then the male, driven by some timeless, noble instinct for survival, eats the eggs. So the truth is that fish don't reproduce at all, but there are so many of them that it doesn't make any difference. -- Dave Barry, "Sex and the Single Amoeba: What Every Teen Should Know"