Underwater Transformers?

Date: 8/3/2017

Sitting in the cockpit of a massive bipedal robot that is underwater with another person in a similar one next to me. The water is eerily clear, almost showing the sea floor as if it were the surface of the moon. these robot things are fast, with both propulsion and running along the seabed. I jump around and swim and fly in this thing, which feels like it's half a mile tall.