Yes, that is a man, paddling a pontoon bicycle, a few feet in front of a pursuing great white shark, wearing absolutely zero protection. #worstjobever
OSHA has thousands of standards that cover many of the specific safety issues that could arise in the workplace. While these standards dig into the minutia of the American workplace, I can guarantee that OSHA lacks one for "shark-race bate".
OSHA, however, does not solely regulate of the safety of the American worker via its specific standards. It also has a General Duty Clause, which provides, “Each employer shall furnish to each of his employees employment and a place of employment which are free from recognized hazards that are causing or are likely to cause death or serious physical harm to his employees.” For example, OSHA used this general duty clause to cite Sea World of Florida following a trainer’s death from a killer-whale attack. If the general duty clause can reach Sea World, it can certainly reach Shark Week.