Notice the rip current channel (between the arrows). It can be identified by the lower height of the breaking waves and the band of foam.

The two main parts of a rip current are identifiable by the brown sediment plume. The "neck" of the rip current (point A) is where the current is narrowest and fastest, while the "head" (point B) is where the current broadens and slows.

Another aerial view of rip currents

Two rip current channels are visible in the surf zone.

Aerial view of rip current channels

Several channels (darker areas) cut into the sea bottom by rip currents are visible along the shoreline.