Category
🐳
AnimalsTranscript
00:00 They're intelligent. They learn, they adapt. They're very clever predators.
00:05 Two attacks. Two big white sharks.
00:12 Once the identity of the culprit is revealed, the experts can start their investigation.
00:20 Why would a big white shark attack?
00:24 Dr. Marks is looking for clues in the local environment and an element is drawing his attention.
00:30 Here on the West Coast, there are many pinnipeds.
00:34 These are marine mammals such as seals and otters.
00:38 Pinnipeds are among the most common marine animals in Oregon,
00:43 with tens of thousands throughout the year.
00:46 They are also on the menu of the big white shark.
00:52 [Music]
00:56 The white shark learns to outrun them at once, or to stop them, to trap them.
01:02 A big white shark is equipped with both a brain and muscles,
01:09 making it a pinniped hunter without a father.
01:13 They're intelligent. They learn, they adapt, they modify their hunting techniques.
01:18 They're very clever predators.
01:22 During these spectacular attacks, the predator surprises its prey from behind,
01:27 at speeds reaching 65 km/h.
01:31 But this remarkable hunting technique is not infallible.
01:40 Any carnivore must succeed at least 10% of the time or it will not survive.
01:47 I can tell you that the big white sharks are well above the 10% success threshold.
01:53 This means that the big white sharks sometimes miss their target,
01:57 or that they are wrong about their target.
02:01 I think the shark took me for an otter.
02:03 I think he was running where the waves were starting to deflate,
02:07 and that I was in an area where he could easily be wrong.
02:11 Did a big white shark try to inflict a deadly wound on Cess, taking him for a pinniped?
02:15 One of their classic attack techniques is to bite their prey a big blow before retreating,
02:19 and wait for it to drain its blood.
02:21 That's probably what he tried to do.
02:23 To test his theory, Dr. Marks recreates the first attack suffered by Cess.
02:31 According to the wounds and scars,
02:35 what I see is that you had your foot back,
02:39 and that this lower teeth touched the bottom of your foot.
02:43 That's the bottom of your foot.
02:45 So that means his head was up there.
02:47 Yeah, I remember having a diving look on his face.
02:51 I could see his gills, and then he started to kind of roll back.
02:55 Then we determined that he had rolled over to the side.
02:59 Exactly.
03:00 And so you can see his eye here.
03:02 Yeah, he went over there, and that's where our eyes met.
03:05 The position and strength of the shark suggests that he was perhaps hunting.
03:11 But Dr. Marks has some doubts.
03:13 When you look at the wounds and the marks left in the frame of the two attacks suffered by Cess,
03:18 none of them make you think of a predation.
03:20 And if they don't make you think of a predation, it's because it wasn't.
03:24 None of them make you think of a predation.
03:28 And if they don't make you think of a predation, it's because it wasn't.
03:32 Perhaps the explanation for Cess' exceptional double encounter
03:37 is hidden in another incredible event that took place elsewhere,
03:41 in the city that holds the title of the world capital of shark attacks.
03:45 [Music]
03:52 [Music fades]
03:54 [Sounds of nature]