Failed jammer (and no backup) - using Stop as chest ascender.
The camera jammer does what it sounds like it does.
These are actually called "Dolfin Boy's Aussie Swim Shorts" and are described as being shorter than a jammer but longer than a brief.
Thus, a man achieves the perfect combination these styles; the coverage that a jammer or board short will provide but the complete freedom of movement that you can only get with a brief or a long competitive short.
This is also a good source for serious surf wear, such as jammer shorts and wetsuits.