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 Video Take a closer look a sharks 1:05 Play video Staff at Sydney's Australian Museum reveal Great White and Goblin Shark specimens preserved in formaldehyde. Shark circles fisherman 0:19 Play video Great white shark swims up to a boat of fisherman off Pottsville. Courtesy: Nine News 
 
 A HUGE 2.7-metre-long great white shark was eaten by an even bigger “mystery sea monster”, according to scientists. 
 
 Researchers had tagged the healthy shark to track its movements as part of a study, but were shocked when the tracking device washed up on a beach in Australia four months later, just four kilometres away. 
 
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 Data captured on the device showed there was a rapid temperature rise along with a sudden, sharp 580-metres plunge. 
 
 The researchers believe the data proves it was eaten by something much bigger, saying the temperatures recorded indicate it went inside another animal’s digestive system. 
 
 The only theory they have so far was that it was gobbled up by a “colossal cannibal great white shark”. 
 
 The case is detailed in an upcoming documentary by the Smithsonian Institute, called the Hunt for the Super Predator, which draws from an earlier ABC documentary The Search for the Ocean’s Super Predator. 
 
 “When I was first told about the data that came back from the tag that was on the shark, I was absolutely blown away,” filmmaker Dave Riggs says in the documentary. 
 
 “The question that not only came to my mind but everyone’s mind who was involved was, ‘what did that?’ It was obviously eaten. What’s gonna eat a shark that big? What could kill a [9-foot] great white?” 
 
 The documentary will air in the US on June 25. 
 
 Shark eaten 

 An Australian Scientist Found A Tooth So Big That It’s Hard To Believe This Monster Actually Existed 
 
 - Duration: 7:02. 
 
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 Yesterday we told you about a terrifying sea monster that’s been rampaging along the coast of Australia, eating great white sharks to death. We (and the the internet’s hive mind) speculated that the shark-eating monster could really have been anything from Godzilla to an underwater Sharknado. Now, we think we have some answers. 
 
 In an effort to determine what had been killing these great whites, Australian scientists had placed a tracking device in a 9-foot (!) shark that was later (tragically) eaten. Based on the data retrieved from this tracking device (including information on the location, depth, and temperature of the shark at time of death), the Australians concluded that only one answer made sense: 
 
 Mega Shark. 
 
 I wish this was a joke, but the actual scientists on the case are calling it a “colossal cannibal great white shark,” so. Just let that sink in for a moment. The tracking data suggests that Cannibal Mega Shark is about 16 feet long and weighs over 2 tons. 
 
 I don’t want to be hyperbolic about this, but I’m pretty sure all air traffic over Australia needs to land ASAP or else: 
 
 (via Gizmodo) 
 
 Meanwhile in related links 

 Hunt for the Super Predator 
 
 There's a mysterious predator lurking in the depths of Australia's wild Southern Ocean, a beast that savagely devoured a great white shark in front of cinematographer David Riggs 11 years ago. Riggs's obsession to find the killer leads him to an aquatic battle zone that's remained hidden until now. Here, killer whales, colossal squid and great white sharks face off in an underwater coliseum where only the fiercest creatures of the marine world survive.
– What wolfs down a 9-foot great white shark like a steak dinner? That's what plagued researchers who had tagged a great white in Australia and found the tag washed up on a nearby beach four months later, Australia's News Network reports. Tag data showed a sudden 1,902-foot plunge and a quick increase in temperature, the latter indicating time spent in an animal's digestive system. "I was absolutely blown away," says filmmaker Dave Riggs in a documentary coming from the Smithsonian Institute, Hunt for the Super Predator (see some of it on YouTube). SPOILER ALERT: Researchers theorized that the 9-footer was eaten by a "colossal cannibal great white shark." Huh? Well according to tracking data, the predator would be roughly 16 feet long and weigh more than 2 tons, reports Geekosystem. No one knows why the attack occurred, but it may have been a territorial issue or the big shark could have just been hungry, Gizmodo Australia reports. In the end, the film "settled on a hypothesis that makes the most sense to me," writes Casey Chan at Gizmodo Australia. "Big sharks eat little sharks." (More unusual news from the deep: Scientists have found a remarkable "underwater graveyard.")