Movie 1:

The water entry of the flexible impactor with impact speed $V=$ 6 m/s and nose radius $R=$ 22.23 mm is shown from an oblique camera angle with multicolor lighting. The spring stiffness $k$ is 4.29 N/mm and the nose mass ratio $\alpha$ is 0.24. Filmed at 20,000 frames per second.

Movie 2:

The slamming phase, subsequent air cavity formation, and air cavity pinch off are shown for the rigid impactor with $V=$ 4 m/s and $R=$ 22.23 mm. Filmed at 20,000 frames per second with the camera at the height of the interface.

Movie 3:

The slamming phase, subsequent air cavity formation, and air cavity pinch off are shown for the flexible impactor with $V=$ 4 m/s, $R=$ 22.23 mm, $k=$ 4.29 N/mm and $\alpha$ = 0.12. Filmed at 20,000 frames per second with the camera at the height of the interface.