Divers today searched 6000 square metres of ocean floor at Dover Heights in Sydney, just a few hundred metres from Caddick’s home.
Nothing of interest was found.
Investigators said they wouldn’t be conducting any further searches in the Dover Heights area.
Ms Caddick disappeared on November 12 last year after leaving her home for what her husband believed was a morning run at 5.30am.
The Australian Federal Police (AFP) raided her home as part of an ASIC investigation the day before she disappeared.