- [Narrator] To tag a shark,
first, we have to catch a shark.
We go fishing for sharks.
Sharks are very good at finding food.
So we get the sharks' attention
by putting the food they like
in the water.
You can see a big dead fish next to our boat
and the shark in the background.
When we have the shark,
we work quickly to place the tag
on its dorsal fin,
and then set it free again.
Placing the tag is like piercing someone's ear,
but we use a drill to make two holes.
We know where to make the holes,
so this really doesn't bother the shark.
- [Man 1] Ah.
- [Man 2] He did not even flinch.
- [Man 1] No, they never do.
- [Narrator] Once the tag is secure,
we let the sharks swim away.
But now we can watch where it goes
for the next few months.
(speakers sound bubble and static noise)