In the depths of the ocean, where sunlight barely reached, a man named Ethan floated serenely, his vibrant shirt contrasting starkly against the dark waters. He wore an old, faded red and blue striped shirt that seemed out of place amidst the aquatic flora and fauna. Suddenly, a shimmering ripple distorted the water around him, signaling the arrival of a temporal vortex.

As Ethan gazed at the swirling vortex, he felt a strange sensation creeping up from within. With a deep breath, he closed his eyes and willed himself into the portal. When he opened them again, he found himself transported through time, still wearing his rainbow-hued attire, but now surrounded by ancient coral reefs teeming with prehistoric marine life.

Ethan marveled at the breathtaking sight before him - a vivid tableau of history unfolding beneath him. Swimming alongside dinosaurs, witnessing the birth of new species, and observing civilizations rise and fall were just some of the wonders he experienced during his journey. Each moment was captured perfectly in the memory of the colorful image imprinted on his mind, a testament to the boundless possibilities of time travel.