Aquatic accords cover more than the familiar idea of a salty sea breeze. A marine accord can combine salty and green effects to suggest the coast, while a freshwater style may be clearer, softer and less briny. Watery molecules can also introduce transparent floral or fruity qualities, so an aquatic effect does not always smell obviously of the sea.
Other notes can change the direction considerably. Grapefruit can sharpen the freshness, aromatic herbs such as sage can give it a greener edge, and soft musk-like materials can smooth the composition. Sea salt and seaweed effects can move it towards a more recognisable marine character. The result is often a feeling of space, moisture and freshness rather than the smell of one identifiable ingredient.