Natica

Possible variation of Nautica (or perhaps a blend of Natalie and Monica).

Natica Nast, an artist, was the daughter of American publisher, entrepreneur and business magnate Condé Montrose Nast.
Linguist Mario Pei described this name as "unforgivable" since it happens (no doubt coincidentally) to be identical with the Italian word for "buttock."
"Natica" is also the name of a genus of snails in the family Naticidae, the moon snails.