On the Edge (Sea Turtles, Dolphins, Monkeys) (4/5)

This journey starts at the gates of the Mediterranean, the Strait of Gibraltar, and heads towards Morocco. Eight times more water flows into the Mediterranean from the Atlantic than is carried by the largest river on earth, the Amazon. Sea turtles, on their long trek from the Caribbean come and go in this current. Unique underwater footage shows how other cross-border commuters, the dolphins, hunt a school of mackerel together. The cliffs of Gibraltar are also home to Europe's only monkeys. But where are these animals from? Are they also cross-border commuters from neighboring Morocco or are they an independent European species?

Eps. 1: Myths (Flamingos, Owls, Golden Jackals)
Eps. 2: Hunters (Wolves and Predator Sharks)
Eps. 3: Wanderers (White Storks, Pelicans, Cranes, Tuna, Fin Whales)
Eps. 4: On the Edge (Sea Turtles, Dolphins, Monkeys)
Eps. 5: Last of their Kind (Turtles and Monk Seals)