Monster High Lagoona Blue Pop! Vinyl Figure:How do you boo? From the classrooms of Monster High comes Lagoona Blue as an all too adorable 3 3/4-inch tall Pop! Vinyl Figure! The daughter of the Creature from the Black Lagoona is decked out in her stylish blue and turquoise outfit with her seahorse necklace. The Monster High Lagoona Blue Pop! Vinyl Figure comes packaged in a window display box.