Shark Propulsion (Patreon)

Conceptualizing how sharks move underwater. When swimming casually, they use their arms to move and maneuver, like real-life seals. When swimming seriously, the tail becomes the main propulsive force, and most sharks can rocket to their top speed in about five tail strokes. Katie can swim at nearly 40 miles per hour (in short bursts), and somewhat resembles a toothy pickup truck hurtling through the water.