Auckland Council has boosted safety action to prevent further people from slipping on rocks at Muriwai after two recent incidents - one of them fatal.
Last week a 19-year-old man died after falling while preparing to go fishing.
In an earlier incident in September, 21-year-old supermarket worker Aaron Mitchell chipped his spine and broke his pelvis in three places from slipping on algae-covered rocks in the same spot on the Auckland West Coast beach.
Mr Mitchell credited the help of another man, who kept his body out of the water until emergency services, with saving his life.
Since last week's death Auckland Council has relocated warning signs and would be adding additional signs, said spokeswoman Angela Jones.