"It was found about 300 feet (90 meters) from his last know position and it was found at approximately 220 feet in depth", she said.
Less than two hours after the Coast Guard called off the search for Stewart, the organization announced on Twitter that the filmmaker's body had been found by "a Key Largo Fire Department dive team".
The Coast Guard had solicited volunteer help in finding Stewart earlier in the week, with a rescue operation in full effect at the time the body was discovered.
The watch standers at Sector Key West Command Center coordinated 27 searches for Stewart, covering approximately 5,987 square miles - an area larger than the state of CT.
"We are burning through our funding very quickly", he said in a video posted to Facebook. "They have been overwhelmingly supportive".
Janszen said another diver in Stewart's group had passed out and was being tended to on the dive boat when Stewart resurfaced.
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Knowing these numbers can help women and their healthcare provider determine their risk for developing cardiovascular diseases. Cardiovascular disease and stroke make up in three deaths among women annually - which is more than all cancers combined.
Stewart died before his third film, Sharkwater: Extinction could be released in 2017.
When the crew went to retrieve Stewart, he was no longer in sight.
Stewart, 37, vanished Tuesday afternoon during a dive with three of his crew members at the Alligator Reef coral reef, some four nautical miles (seven kilometers) off the island of Islamorada.
Stewart's Sharkwater received praise and honors around the globe after debuting at the Toronto Film Festival. His goal was to visit and survey the wreckage of the Queen of Nassau.
"They were going deeper than he's gone before", MacLeod said in the ET interview.
A Coast Guard spokesman, Petty Officer Eric Woodall, said: "We would not still be searching for him if we could not find him alive". Sea Shepherd, whose leader, Paul Watson, was heavily featured in 2002's Sharkwater, sent one if its Miami-based vessels to help in the search for Stewart.