The "Three Sisters", as she is called, is an unidentified wooden-hulled vessel. She sits in 80 ft of water some 13 miles south of Atlantic Beach Inlet. She sits on a sandy bottom, spread out over a small area. Her boiler and a 4 bladed propeller are still visible. Wooden beams and planking spread out from the boilers aft towards the propeller. Occasionally some artifacts are found, mostly brass fittings. This is generally a decent wreck for lobsters and spearfishing. This wreck is in a main shipping channel, and large vessels make large wakes, so secure all gear.
by Dr. Jolie Bookspan, author of Diving Physiology in Plain English
Myth 1 - The Dive Reflex Protects You
In the dive reflex, heart rate and limb blood flow decrease. Careful science ( that means we didn't accidentally step on the thermisters ) shows time and again that the dive reflex does not reduce the need for oxygen underwater as it does in marine mammals. Field studies ( where you're allowed to step on the thermisters ) indicate that the dive reflex does not extend breath-holding time. Occasional cases of human survival after very cold water near-drowning are not due to the dive reflex. Cold is the likely mechanism behind the reduced metabolism that permits survival.