https://peertube.dngr.us/videos/watch/464418a2-504e-4e37-93a6-8d6f7a16c114 Help us preserve, scan and post more rare and endangered films on Patreon: https://www.patreon.com/PeriscopeFilm Join this channel to get access to perks: https://www.youtube.com/channel/UCddem5RlB3bQe99wyY49g0g/join Website: https://PeriscopeFilm.com This episode of "Danger is My Business" entitled "Shark Doctor" (1961) focuses on David Brown , a young English marine veterinarian at Marineland of the Pacific in California, who plunges into a tank to hand-feed an injured killer shark. His other patients include a giant porpoise, poison rays, a sixteen-foot octopus, and other monsters of the deep. Host John D. Craig follows aquarist Dave Brown, a “shark doctor,” as he captures, transports, and cares for dangerous marine animals like sharks and porpoises. It highlights the extreme risks involved—from ocean capture to revival techniques like “walking” sharks—while emphasizing both the intelligence of marine life and the dedication required to study and preserve it. 00:00 - A man who risks his life treating deadly sea creatures—“maneaters of the deep.” 0:44 - Sharks are described as difficult to keep alive in captivity unless cared for by expert aquarist Dave Brown. 0:52 - Adventurer and deep sea diver Col. John D. Craig introduces the unusual profession of a “shark doctor.” 1:04 - Aquarist Dave Brown cares for dangerous marine animals at Marineland of the Pacific. 1:34 - Discussion on techniques used to capture marine creatures for public display. 2:01 - Expedition begins aboard the Geronimo with skipper Frank Bcato and assistant Boots Kalandrino. 2:53 - Dave and Frank form a skilled team dedicated to catching and preserving marine life. 3:10 - The mission's primary objective: searching for sharks. 3:23 - Intelligent, fast porpoises are encountered and targeted for capture. 4:01 - Method for catching porpoises humanely without hooks, focusing on their surfacing patterns. 4:50 - Capturing porpoises is risky; fishermen face being pulled overboard or capsizing. 6:04 - Once secured, porpoises become passive, suggesting high intelligence. 6:39 - Search shifts to blue sharks using mackerel chum and barbless hooks to minimize injury. 7:51 - A shark is hooked; maintaining tension is vital to prevent escape and injury. 8:19 - Successful capture and transfer to the boat's tank despite increasing danger from surrounding sharks. 9:43 - Struggle with larger sharks highlights their muscular power and deadly, razor-sharp teeth. 10:27 - Risky transfer to Marineland; stress and shock can be fatal to sharks during handling. 11:32 - Sharks are described as ancient, highly evolved predators with limited scientific documentation. 12:10 - Use of water-filled stretchers to keep sharks alive during transport. 12:33 - Dave demonstrates "walking the sharks," an artificial respiration technique 13:04 - Resuscitation requires moving sharks so oxygenated water flows through their gills. 14:10 - Unpredictability as sharks regain consciousness makes walking them extremely dangerous. 14:56 - Predators guided by smell and movement, often circling prey before striking. 15:52 - Clarification: sharks do not need to flip over to bite, requiring constant handler alertness. 16:15 - Sharks possess replaceable, razor-sharp teeth and an ancient lineage millions of years old. 17:34 - Revived sharks are released into large tanks to coexist with other species. 18:33 - Introduction of a large octopus and orphaned baby seals cared for by Dave. 20:25 - Health of captive porpoises is maintained through vitamins and specialized medical care. 22:19 - Training emphasizes porpoise intelligence, using play and rubber rings to develop interactive games. 23:38 - Despite successful training, porpoises remain unpredictable wild animals. 24:19 - Conclusion: Dave continues his risky mission to study and preserve marine life. 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