The Flounder's Eye

A good example of bad design is the flounder, whose popularity as an eating fish (Dover sole, for instance) comes partly from its flatness, which makes it easy to bone. There are actually about 500 species of flatfish— halibut, turbot, flounders, and their kin—all placed in the order Pleuronectiformes. The word means “side-swimmers,” a description that’s the key to their poor design. Flatfish are born as normal-looking fish that swim vertically, with one eye placed on each side of a...

 Eating Fish During Pregnancy

I dive deep into the research, its strong currents pushing me first one way—fish is good!—and then the other—mercury is bad!—and finally surface with a seemingly obvious conclusion: eat fish, lots of it, just not the mercury-laden kind. This is harder than it sounds. Fish, to me, has meant a pink slab of tuna steak or a creamy slice of swordfish (or that coveted tuna-salad sandwich). Now I set about getting acquainted with the ocean’s other inhabitants: small fish at the bottom of ...