Aquatic is the smell of the idea of the sea: marine air, wet stone, watermelon-cool freshness, built mostly from a molecule called Calone that made the nineties smell like the beach. No other accord says "clean and modern" as efficiently, and none is easier to wear; aquatics are the flip-flops of perfumery, casual, unpretentious, impossible to overdress. Acqua di Giò is the eternal reference, Invictus its sportier cousin, and Acqua di Giò Profumo the grown-up version that adds smoke and stone to the seawater. They shine hardest in heat and around water, fade faster than heavier families, and offend absolutely no one. First fragrance for a teenager or a summer wedding by the coast? Start here.