Name: Predatory Shark Attacks | When Sharks Attack
Uploaded: 2020-10-23T22:46:46.000Z
Duration: 2 min 16 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

When a shark bites a human, they never get the same taste,

let's say, as they would by biting a fish.

Adverbs of manner

So generally, they will release us and swim away.

The shark came in, attacked the victim, and came back

NARRATOR: So what could cause sharks to display

For Collier, there can be only one explanation.

In my opinion, these animals were not investigating.

These sharks were attempting to feed on the victim.

NARRATOR: Sharks trying to feed on humans.

It's a terrifying and virtually unprecedented revelation.

It's extremely unique and very, very rare.

For Dr. Dan Huber, such unnatural behavior

suggests that something equally unnatural

must be occurring in the predator's environment.

In fact, it could point to some kind of human intervention.

Animals can be trained to exhibit certain behaviors

And the reason why this works is because the stimulus

NARRATOR: This concept is known as conditioning.

One of the primary ways that this happens

is if a shark gets hand fed over and over

and over again, it's learning to associate people

Which means that it's going to exhibit feeding

behaviors around people, even if that food reward isn't present.

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Predatory Shark Attacks | When Sharks Attack

extremely

present

concept

determine