California Code, Harbors and Navigation Code - HNC § 655.2

(1) Within 100 feet of any person who is engaged in the act of bathing. A person engaged in the sport of water skiing shall not be considered as engaged in the act of bathing for the purposes of this section.

(2) Within 200 feet of any of the following:

(1) Vessels, including personal water craft, clearly identifiable as lifeguard rescue vessels engaged in public safety activities.

(2) Public safety vessels engaged in direct law enforcement activities or public safety activities that are displaying the distinctive blue lights prescribed by subdivision (a) of Section 652.5.

(3) Personal water craft, clearly identifiable as lifeguard rescue vessels or public safety vessels, operating within the surf zone.

(1) “Clearly identifiable as lifeguard rescue vessel” means an authorized lifeguard water rescue vessel operated by or owned by a public agency.

(2) “Public safety activities” include public agency sanctioned patrolling, traffic control, assisting disabled vessels, salvage operations, firefighting, providing medical assistance, search and rescue, and training.