Create an image of a futuristic robot dolphin transporting passengers through an enchanting underwater wonderland filled with glowing coral reefs and fantastical sea creatures.

Picture a futuristic metallic dolphin-like robot smoothly carrying diverse passengers on their journey into a mesmerizing underwater world. This aquatic wonderland is blooming with vibrant and glowing coral reefs that exude a spectrum of iridescent colors. The oceanic fauna consists of an array of fantastical sea creatures, each more unusual and captivating than the one before, encompassed by a flurry of floating bubbles. Illuminate this scene with soft beams of sunlight permeating the azure depths, adding an ethereal and spellbinding quality to the seascape.