Depict a lively banner for a mother's special day, featuring a bald middle-aged man riding on a cartoon-style shark as if it were his brave mount, wearing an embellished wizard's hat similar to those seen in fantasy epics. Accompanying him is a small, dutiful dog, vested with a bow and arrow as if he were an expert marksman from a magical saga. They are pictured in an exaggerated underwater setting, imagined as a mythical realm, with fish darting amongst ostentatious coral formations that mirror grand fortresses. The words 'Happy Birthday' are intricately scribed in an elegant fantasy language script, while the phrase 'For a Mum whose love is deeper than the sea and grander than a sprawling fantasy world' serves an endearing touch to the tableau.

Generated with these themes: Wallace and gromit, Sharks, Being a mum, and Lord of the rings.

Made with ❤️ by AI.