He is no ordinary angler, but an extreme one. Animal Planet’s ‘River Monsters,’ takes viewers across the globe with Jeremy Wade to track down flesh eating underwater dwellers.

Combining experience with detecting skills, the host investigates a range of strange and dangerous cases.

From the terrifying bullshark, alligators, piranha to the Alaskan Horror, Amazon Assassins, Electric Executioner and the European Maneaters, he unravels each mysterious story.

In ‘Strangers Among Bears,’ February 21 at 10.30 p.m., meet Charles Vandergaw, who has been living with wild bears for more than 20 years, in the Alaskan wilderness.

He has developed a unique, but controversial, relationship with the black and grizzly bears that live near his isolated cabin. Charlie allowed the cameras to capture an entire season at ‘Bear Haven.’

Once a bear hunter, now a bear protector and 'best friend,' Charlie has gone from killing black bears and grizzlies to living among them.

According to some, he has a serious addiction to wild bears. Is this an addiction that could end up proving fatal?