Tough mudder, fish aquarium, wife Kelly, children Jamie, Emily, Lily, and Birthday Card

At the top of the Cartoon Style image, "Happy Birthday Mark"

At the bottom of the image, "From Tough Mudder to Tank Mudder—make a splash!"

In the center, illustrate a riotously fun cartoon scene inside a giant fish aquarium that’s been turned into a Tough Mudder course. Mark, with an oversized grin and exaggerated limbs, swings mid-air on a smiling electric-blue eel “rope,” sending swirls of chocolate-brown “mud” mixing with bright teal water. Thick black outlines and bold, saturated colors make everything pop.

Around him, cheeky sea critters cheer: a buff goldfish in a sweatband flexes, pufferfish form a bubbly “barbed wire” crawl, a starfish offers a high-five foam finger, and a crab in a referee shirt blows a whistle. Coral and kelp create colorful obstacles labeled on tiny placards (minimal text): “Kelp Crawl,” “Eel Swing,” “Bubble Wall.”

Outside the tank glass, wife Kelly and kids Jamie, Emily, and Lily press up with goofy, squished-cheek faces and big sparkling eyes, waving handmade fish-shaped signs that say “Go Dad!” Each has their name on their shirt: “Kelly,” “Jamie,” “Emily,” “Lily.” Add playful details: a seahorse handing Mark a tiny water bottle, confetti-bubbles and glittery streamers rising, dynamic motion lines, and splash effects.

Style: Playful cartoon characters with exaggerated proportions, thick outlines, bright saturated colors, and whimsical, energetic poses. Energetic, humorous composition with a slight fisheye perspective to sell the giant-aquarium setting.

Generated with these themes: Tough mudder, fish aquarium, wife Kelly, children Jamie, Emily, Lily, and .

Made with ❤️ by AI.