A fun fact, a big splash is often a turtle. Little bubbles and a gurgle….
This is an alligator. Yep, little bubbles. Alligators bob up and down by releasing air (and actually moving their lungs) just a small amount. They can go up and down with no ripples or sound.
He made those bubbles.
In fairness this was just a 4 foot (122 cm) alligator. But really, I make more bubbles when I brush my teeth!