Actually, there is quite a bit of surface action.
This image capture (from a carefully searched - one of the video frames), of two separate bubble masses -surfacing & surfaced- reveals the interesting physics at play. The two side-by-side bubbles are a perfect capture of (1) the surface water bulging from an uprising "high density mass of bubbles (Froth)" that is pushing a "head of water". The uprise and combined water head bulge plus the "froth mass", forms a shadow. This shadow is in line with the sun angle.
"Froth masses" are interesting. They reveal a high density of small air bubbles. It takes a high pressure "jetting" action to create these.
When these surface, the high density of small air bubbles form a destructive interference of the normal concentric ring patterns a single "point" disturbance would normally create. However, there exists a mass of concentric ring patterns to all of the small air bubbles individually. This is the force that causes such quick surface dispersion and sudden widening on the water (2). But there is no "wave" action as a singular large air bubble would create.
The shape of the uplifting "froth mass" body determines the strange & interesting dispersal patterns from these large number of interfering concentric ring wavelet(s) combined expansion energy.
Hope this helps.
== nerd stuff: FROTH: VERB: form or contain a rising or overflowing mass of small bubbles: NOUN: a mass of small bubbles in liquid REDNECK: Beer (foam head)