Sixteen colorful sea slugs populate a dark navy background, arranged in a neat grid of four rows and four columns. Each creature glows with neon hues of pink, yellow, blue, orange, and purple, their rounded bodies adorned with delicate flower-like frills and appendages that suggest a whimsical, almost botanical interpretation of marine life. Printed on smooth white card stock and made to order, artwork on the front, blank inside, envelopes included in every set. A handwritten note that arrives as an independent artist's work.