About a dozen people re-enacted the drowning of Raymond Zack, who intentionally drowned himself off the same beach on Memorial Day. Organizers of the event say the Alameda fire and police departments could have done more to save the 53-year-old.
Alameda firefighters did not attempt to save Zack because they are not certified for such rescues. The woman who called 9-1-1 watched Sunday's event form the shore and said she felt guilty for not doing more.
"I think, 'Why didn't I do something, because obviously it would not have been that difficult," Sharon Burnetti told ABC7.
The swimmers say the condition were so mild a rescue would have been easy.
Alameda's fire chief has not responded to phone calls from ABC7.
The swimmers chose Sunday morning because of similar tide conditions. Afterwards, they held a moment of silence for Zack.