Imagine you are a whale...
Picture yourself slipping into the water, naked. Hold your breath. Sink down. Imagine your body expanding, lengthening. Feel each vertebrae click as your spine draws up and back, a little shiver as you shimmy out of your pelvic girdle, legs and hips set adrift. In their place you sprout a broad triangular fluke, which you force down now in a long, muscular undulation that drives you deep under the water, the light from the surface fading. But new lights gutter in your head; soon the hunt will start, and the lights will turn to sound, and the sound will light the dark.