NARRATOR: These safari
tours are about to get
the sighting of their lives.
Hippo versus bull shark.
The strongest bite
force of all mammals
faces off with the strongest
bite force of all sharks.
[dramatic music]
Just 150 miles south
of Ryan's study site,
at St. Lucia estuary,
one of Africa's
largest tidal wetlands--
a watery mix of fresh
and salt. Shallow.
Warm.
Just right for bull sharks.
And a once in a lifetime
encounter on safari.
[dramatic music]
This shark was probably
chasing a fish when it
caught the hippos by surprise.
Africa's deadliest
large land animal.
