The Gene-Rich, Sex-Poor Rowboat Called Paramecium

Few organisms rank lower in life than the gelatinous, pond-dwelling paramecium. It consists of one cell, two orifices, and thousands of hairy feet that project from its surface like beard stubble. Yet this seemingly primitive organism is capable of some surprisingly complex behaviors. It can swim 10 times the length of its body in one second, reproduce with and without the help of a partner, and cunningly hunt for food, all of which allow it to thrive in unsalted waters worldwide.