Four unlikely friends were frolicking in the ocean one day.  They were the Ghost Crab, the Blue Marlin, the Jellyfish, and the Nautilus.  The crab and the marlin splashed about on the surface, and dove back down, while the jelly and the mollusk bobbed gently under the surface.

Overhead, there passed the shadow of the Seagull, who watched the friends with great interest, a great interest born of a keen hunger.  Here she saw a variety of sweet and juicy treats for her to feast on.  She could easily carry off the crab, the snail, and the mollusk.  But that marlin was another matter.  He was a giant next to her, and he would surely swipe and skewer with that bill of his.  And being how fast he could swim, if he knocked the Seagull into the water, she would surely become his lunch.