A trout is a predator.

This blinds or distracts the predator.

That top predator, of course, is us.

The fly is going to sense this predator.

A predator. Maybe 25 pounds, or 10 kilograms.

Here we are not talking about a predator.

Is it prey? Is it predator? Is it mate?

Here on the model you see the predator attacking.

Is it just the wind or a dangerous predator?

But always keep in mind Beware of the predator!

There's another top predator in the ocean, it turns out.

I didn't want to go with this ruthless predator image.

Now, all this changes when a predator enters the scene.

It is so swollen that no predator can catch him.

The predator smells the bait, sneaks up... and he's caught!

Is it a dangerous predator, or is it just the wind?

But it's a lion of the sea. It's a top predator.

Well, the wind is inanimate the dangerous predator is an intentional agent.

Now, can any of you see the predator that's about to jump out at you?

And that predator is the giant ocean sunfish, the Mola mola, whose primary prey are jellyfish.

A three and a half foot thing, beautiful skull, predator, meat eater, a two legged animal.

And so, there's a game of predator prey that's going to be, essentially, universal, really, in any kind of biological system.

And when you have that, then evolutionary theory tells us that natural selection will favor the more exploitative, more predator like organisms.

Now, uncertainty is a very bad thing. It's evolutionarily a bad thing. If you're not sure that's a predator, it's too late.

And this is this voracious predator launching a sneak attack on this poor little unsuspecting jellyfish there, a by the wind sailor.

Any animal you see that you've seen before is less likely to be a predator than one that you've never seen before.

And so, the theory tells us that when diarrheal disease organisms are transported by water, we expect them to be more predator like, more harmful.

It's this pinwheel of light, and I've done calculations that show that this could be seen from as much as 300 feet away by a predator.

On the other hand, if you believe that the rustle in the grass is just the wind, and it turns out it's a dangerous predator, you're lunch.

The reason that the electronic jellyfish worked as a lure is not because giant squid eat jellyfish, but it's because this jellyfish only resorts to producing this light when it's being chewed on by a predator and its only hope for escape may be to attract the attention of a larger predator that will attack its attacker and thereby afford it an opportunity for escape.

Because she is a cub wanting to play, but she was also a predator needing to kill, and yet conflicted in some way, because she was also an emerging mother.

Well, if you think that the rustle in the grass is a dangerous predator and it turns out it's just the wind, you've made an error in cognition, made a Type I error, false positive.

What really wowed me about that was the way it came in up over the e jelly and then attacked the enormous thing next to it, which I think it mistook for the predator on the e jelly.

It's got these jewel like light organs on its belly that it uses for a type of camouflage that obliterates its shadow, so when it's swimming around and there's a predator looking up from below, it makes itself disappear.

And so I want to show you a high speed video sequence of a fly shot at 7,000 frames per second in infrared lighting, and to the right, off screen, is an electronic looming predator that is going to go at the fly.

Eight years later, pinned down by a US Predator drone and French airstrikes, Qaddafi met his demise. Without a nuclear deterrent, his regime was helpless when the US reneged on the deal a lesson that has not been lost on North Korea.

Humankind has been looking for the giant squid since we first started taking pictures underwater. But the elusive deep sea predator could never be caught on film. Oceanographer and inventor Edith Widder shares the key insight and the teamwork that helped to capture the squid on film for the first time.

The studies, observing the complexity of the interactions between living organisms and the chemistry of their aquatic habitats, note that the ecosystem of the entire water body may be affected through the predator prey relationships of the food web and that species of plants and animals may decline or disappear as acidity increases.

In a bid to counter the fly, a team from the world renowned ICIPE institute in East Africa recently went to Sri Lanka looking for a natural predator. Researchers have now pinpointed one, which, after careful screening, has been deemed safe to release into Africa s environment and appears likely to defeat the unwelcome invader.

Like, for example, a hive of bees that's finding a new nesting site, or a flock of birds that's evading a predator, or a flock of birds that's able to pool its wisdom and navigate and find a tiny speck of an island in the middle of the Pacific, or a pack of wolves that's able to bring down larger prey.

Now I have carefully cropped this sequence to be exactly the duration of a human eye blink, so in the time that it would take you to blink your eye, the fly has seen this looming predator, estimated its position, initiated a motor pattern to fly it away, beating its wings at 220 times a second as it does so.

Today, we have young women like this one teaching villages in Africa how to put their animals together into larger herds, plan their grazing to mimic nature, and where we have them hold their animals overnight we run them in a predator friendly manner, because we have a lot of lands, and so on and where they do this and hold them overnight to prepare the crop fields, we are getting very great increases in crop yield as well.

Today, we have young women like this one teaching villages in Africa how to put their animals together into larger herds, plan their grazing to mimic nature, and where we have them hold their animals overnight we run them in a predator friendly manner, because we have a lot of lands, and so on and where they do this and hold them overnight to prepare the crop fields, we are getting very great increases in crop yield as well.

Now, another form of defense is something called a burglar alarm same reason you have a burglar alarm on your car the honking horn and flashing lights are meant to attract the attention of, hopefully, the police that will come and take the burglar away when an animal's caught in the clutches of a predator, its only hope for escape may be to attract the attention of something bigger and nastier that will attack their attacker, thereby affording them a chance for escape.