Envision a futuristic cityscape with towering skyscrapers and bustling streets, but instead of people, the streets are filled with massive sea creatures like giant squids, jellyfish, and sharks, with a tiny human figure standing at the edge of the city, looking out at the enormity of the underwater metropolis.

Design an infographic showcasing the massive size of the blue whale, with a tiny human figure standing next to it for scale, surrounded by a school of smaller fish swimming in the background, with a subtle gradient of blues and greens to represent the ocean's depth.

Create an illustration of a giant octopus, its tentacles stretching across the surface of the ocean, with a small sailboat in the background, emphasizing the enormous size difference between the two, set against a backdrop of a sunny day with fluffy white clouds.