Is it possible for just 2 animals to shape an entire ecosystem?
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00:00It's hard to imagine any sea creature giving a great white shark a hard time.
00:07I mean, look at all those teeth.
00:09But despite rows upon rows of pointy, pointy terror, marine biologists have identified
00:13a pair of predators that are forcing great whites to flee their habitats.
00:17Researchers initially noticed the sharks vacating areas around South Africa, and they assumed
00:21it was people that were making them leave.
00:23But upon further investigation, it has now been discovered that it wasn't human activity
00:27or some environmental impact or change at all.
00:29But a pair of these, orca whales.
00:32Since 2017 alone, eight great whites have washed up on shores along South Africa, each
00:36missing livers and hearts.
00:38Those are the choice meats that killer whales usually go for.
00:41Meaning it was pretty easy to determine that orcas were responsible for the attacks.
00:44But the wounds were even more distinct and similar in all of those that washed ashore.
00:48Which is why experts now believe just two orcas are responsible for all of the great
00:52white deaths.
00:53What's more, they think there are definitely more dead sharks out there that have never
00:57made it to land.
00:58And after tracking 14 sharks with GPS tags, they've discovered that the more orcas that
01:02were patrolling the waters around South Africa, the longer the great whites would stay away.