My interpretation of the chorus was a little different than RockXWL's.
My first impression was that "Look what I have found" was meant in a sarcastic way. He thought that he had found something beautiful and special (the seashell being a metaphor for the love of his life), but in fact, he had simply found something common and ordinary (just another girl). Basically....Look what I have found! Just another seashell.
My interpretation of the chorus was a little different than RockXWL's.
My first impression was that "Look what I have found" was meant in a sarcastic way. He thought that he had found something beautiful and special (the seashell being a metaphor for the love of his life), but in fact, he had simply found something common and ordinary (just another girl). Basically....Look what I have found! Just another seashell.