[dramatic music]
NARRATOR: This pup has
strayed too close to the edge.
Now, it's out of its depth.
[seagull cawing]
A pup can outmaneuver a
shark, but only for so long.
Half of all such encounters
end badly for seals.
[seals calling]
The adults must deal with
this persistent menace.
But how?
It takes one brave
seal to lead the way.
Others join.
Soon, they are a mob
harassing the intruder.
It's a risky strategy.
Sharks can turn on a dime.
Together, they've
overcome a giant.
