Great White has Sub-marine Predator ??

[Gad]

Australian filmmakers contracted for a marine investigation are baffled as to what could have eaten a 3m great white shark they tagged as part of the study.

/>http://news.ninemsn.com.au/technology/2014/06/08/15/40/tv-show-suggests-great-white-has-sub-marine-predator

[Gad]

I would say a 4+- 6m+ great white had a snack on one of it`s own…. natural selection = the sick, the weak, the slow

[Ovington]

My guess is an orca or maybe a cookie cutter accidently inhaled it haha. Or yes a bigger shark could have easily. There is even the possibility it fell off (as they often do) and a near by predator mistook it for a fish.

[Gad]

WA 'super predator' myth debunked
/>http://news.ninemsn.com.au/national/2014/07/02/17/06/wa-super-predator-myth-debunked

5:03pm July 2, 2014

Persistent speculation that a colossal sea predator may have devoured a nine-foot white shark in waters off Western Australia's south has been debunked.

It all started when a CSIRO shark tracking device washed up on a beach near Esperance in 2004.

Data on the device showed it had suddenly plunged more than 500 metres beneath the waves and undergone a spike in temperature.

In several media reports that persisted right up until last month, the theory was that the shark to which the device was attached had been eaten by a much larger creature, with the 30 degree jump in temperature caused by the heat within its digestive system.

The matter even inspired a documentary, Search For The Ocean's Super Predator, which was broadcast in November.

Some reports even suggested the incident was evidence of the existence of a megalodon, a huge and long-extinct species of shark.

But CSIRO has decided to dispel the myth for once and for all, providing a very simple explanation for the seemingly curious case: the tag was bitten off the research subject by another white shark.

"The temperature recorded ... was consistent with that of the core body temperature of a white shark but too low for something like a killer whale," the organisation wrote on its news blog.

"At one point, the tagged shark dived to a depth of 570 metres - this is not unusual for white sharks - it is normal behaviour.

"This dive took place about one week prior to the tag recording the higher temperatures (not immediately before as some have reported) and the two events are not related.

"We have seen white sharks biting each other before, sometimes removing pieces of tissue in the process.

"One shark bit off a little more than he could chew and ended up swallowing the tag."

CSIRO has one of the most comprehensive white shark research programs in the world, with over 250 tagged in Australian waters.