One reason the trend resonated so deeply is biological anthropomorphism. Dolphins have fixed facial structures that resemble a perpetual smile. When viewed in high definition, this "smile" appears even more pronounced.

Dolphins frequently surf the pressure waves created by the bows of boats. High-definition cameras mounted on the hulls of vessels captured these animals effortlessly gliding inches from the ship, making direct eye contact with the passengers above.

High-Definition (1080p or 4K) cameras, such as GoPros or high-end smartphone housings, allow you to see the water droplets, the dolphin’s texture, and the vibrant underwater colors as if you were there [1].