posted on Jul, 10 2008 @ 08:32 AM
I have to be a bit sceptic about this one.
Great Whites have been seen chasing prey in water as shallow as 3 feet. But then again, 7 meters is pretty much as big as they get, and getting a body
that size through "ankle deep water" is an amazing feet!
Getting into the lake is one thing, but staying alive in there is a whole other thing. The Great White simply doesn't have the same Osmoregulation
capabilities such as the Bull Shark (for instance). I couldn't get any data on the salinity of the lake, but what I get is that it's "fresh
water". Then again, if the rain fall has been low in the area the lake's salinity may be higher than usual making survival for a Great White more
All that said, as testrat also pointed out - it has happened before...
The infamous White Shark has never been recorded from fresh or brackish waters. Despite its reputation for toughness, the mighty Great White may
be just as osmotically helpless in freshwater as the potamotrygonid stingrays are in salt. Yet it may be premature to conclude that White Sharks
cannot tolerate reduced salinities: in January 1997, a juvenile Porbeagle (Lamna nasus) — a close relative of the Great White — was captured in
brackish water at the mouth of the Mar Chiquita Lagoon, Argentina.
At least I’m sure they can’t say it was someone’s “exotic pet” that was released into the wild by a concerned owner...
[edit on 10-7-2008 by Gemwolf]