Photo: Remembering Manhattan Beach teen Mason Zisette

Hundreds gather to participate in a paddle out and memorial for Mason Zisette at Manhattan Beach on Friday. Zisette was a 16-year-old Manhattan Beach resident who died Saturday, two days after he hit a bridge on the 405 Freeway in Inglewood while standing on the top section of a double-decker Star Line Tours bus.  (Genaro Molina / Los Angeles Times)

Katherine Zisette, 10, the sister of Mason Zisette, carries flowers in honor of her brother during a paddle out and a memorial for him at Manhattan Beach.  (Genaro Molina / Los Angeles Times)

Participants walk along the surf at the end of a paddle out and memorial for Mason Zisette at Manhattan Beach.  (Genaro Molina / Los Angeles Times)

A young woman carries flowers while heading out into the surf to participate in a paddle out and memorial for Mason Zisette at Manhattan Beach.  (Genaro Molina / Los Angeles Times)

Participants in a paddle out for Mason Zisette make their way back to shore at the end of the memorial.  (Genaro Molina / Los Angeles Times)

A young couple give each other a hug of support at the end of a paddle out and memorial for Mason Zisette at Manhattan Beach.  (Genaro Molina / Los Angeles Times)

People line Manhattan Beach on surfboards and on land during memorial for Mason Zisette.  (Genaro Molina / Los Angeles Times)

Young men head out into the surf to participate in a paddle out and memorial for Mason Zisette at Manhattan Beach.  (Genaro Molina / Los Angeles Times)