A collection of blue sea slugs floats across a deep navy background, each creature rendered in shades of electric blue, orange, and yellow with glowing accents. The illustration style is playful and whimsical, with rounded forms and luminescent details that give these marine animals an otherworldly, almost bioluminescent quality. 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.