U.S. Coast Guard to suspend search for Toronto's Sharkwater filmmaker Rob Stewart in Florida Keys

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      Update (Feb. 3, 5:05 p.m.): The U.S. Coast Guard has located Stewart's body.

      The U.S. Coast Guard announced today that it will end its air and sea search at sunset for Canadian filmmaker Rob Stewart who went missing during a dive in the Florida Keys area.

      Stewart, who was filming the documentary Sharkwater: Extinction, was reported missing around 5:15 p.m. EST. on January 31 near the Alligator Reef in the Upper Florida Keys.

      The 37-year-old filmmaker from Toronto had been doing a dive of a depth of up to 220 feet, which few divers are experienced enough to do. It was his third dive of the day.

      He had been with three other divers. While boat crew were busy administering oxygen to a diver who surfaced and passed out, Stewart surfaced but later disappeared.

      He has been missing for over 72 hours, which is the time limit that someone is capable of surviving in current conditions.

      The coast guard announced at a press conference (held at 4:30 p.m. EST) that it will suspend its search at sunset today (February 3), which is around 6:15 p.m. EST.

      Stewart directed and starred in the 2006 documentary Sharkwater, in which he raised awareness and concerns about how the demonization of sharks has led them to be hunted to near extinction, and how their decimation is leading to a collapse of ocean food chains.

      He was shooting the followup to that film on his latest dive.

      You can follow Craig Takeuchi on Twitter at @cinecraig or on Facebook