Claire Corlett

Fish Food, Fish Tanks, and More
Something Ate This Shark…but What?

Something Ate This Shark…but What?

NARRATOR: Filmmaker Dave Riggs
had been contracted to document Australia’s first large scale
great white shark tagging project. The team’s aim was to tag
adult great white sharks, so they could study their
patterns of movement along Australia’s coast. I remember looking
at one of them, thinking, wow, it was just a
magnificent looking animal. It was only 3 meters long. Didn’t have a mark on it. When she first came in, she
came in with a real swagger, like a real
confident, bold move, and then just pushed
up against the dingey. And gave us an
opportunity to tag her, and place this tag perfectly. NARRATOR: Code
named Shark Alpha, the healthy female
left the scene without any sign of distress. Four months later,
Shark Alpha’s tag was found by a beach comber. The device washed ashore
2 and 1/2 miles from where it was attached to the shark. Its data revealed
an incredible story. When I was first told
about the data that came back from the tag that
was on the shark, I was absolutely blown away. NARRATOR: At 4:00
AM on Christmas Eve, the shark suddenly
plunged at high speed straight down the edge
of a continental shelf. It showed this
profile going down the shelf to 580 meters, and
then a huge temperature change. NARRATOR: Within
seconds, the shark tag recorded a dramatic temperature
shift, from 46 to 78 degrees Fahrenheit– a
temperature that could only be achieved inside the
belly of another living animal. The question
that not only come to my mind, but everyone’s
mind who was involved was, what did that? It was obviously eaten. What’s going to eat
a shark that big? What could kill a 3
meter great white? NARRATOR: The tag recorded
78 degrees for eight days, moving between the surface
and a depth of 330 feet before it was released. There was no doubt the
seemingly indomitable Shark Alpha had been attacked
and eaten by a super predator of the deep.

65 comments on “Something Ate This Shark…but What?

  1. Sounds to me that the tracking device was improperly secured onto the shark fell off and was eaten by some Curious creature

  2. Orka, known also as killer whale. They are known to prey on great white sharks. Also they would move between the surface and the depth, because they need to go up to breath.

  3. Despite us knowing 10-15% of our oceans, planes go down and it takes years to even find a piece of it, and we’re still discovering new species every day, it’s literally impossible for any predator bigger than a shark to exist?

  4. Is it possible that shark ate the tag and went down to that level but released it in the poop next day? The tag could have come out from her and may be another shark or big fish had eaten that

  5. Shark rubbed the Tag off on a rock on the ledge because it was bothering him..Sponge Bob happened upon it put it in his pocket…but lost it…later..

  6. As exciting as it would of been for a megladon to of swallowed the shark whole, the logical explanation is something ate the tag because it fell off, or another slightly bigger shark bit it off

  7. Sharks often prey on smaller sharks, even of their own species, IF they can catch them. But if they are wounded or very old, they are just as much prey as other fish. Sharks are opportunistic feeders, some species like the Tiger Shark will eat anything, other shark species are more picky about what they eat. But most sharks will "test-bite" to see if the prey is something they want to eat. And they often will bite, move their head back and forth, which severs blood vessels, then they back off and wait for their prey to bleed out and become immobile so it can't hurt them, then they will eat it. Sharks prefer fatty prey, they have large livers that are very fatty so they need a prey that has blubber if they can get it.
    Orcas hunt in packs and have been known to surround and attack sharks. They may even make a precision cut into the shark and remove just its liver. We know they have fairly large brains and they communicate with each other through whistles, grunts, even blowing bubbles! So they are smarter than most marine species. Orcas also prey on whale calves, thus the name "killer whale" — Whale calves swim above their mother because they surface more often to catch a breath. Orcas will separate a whale calf from its mother, then swim above it so it can't surface to breathe, then it drowns and becomes their lunch. Sad, but that's life (and death).

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