The Mouth of the River
In The Mouth of The River: Magic Where River Meets Sea, narrator Sir David Attenborough describes how playful macaques swim and splash in a watery paradise. Explore the world’s largest delta, the largest mangrove forest, and a salt-marsh grass habitat. This video is excerpted from BBC's Planet Earth, a breathtaking documentary series that highlights the natural wonders of our planet.
Sir David Attenborough celebrates the amazing variety of the natural world in this epic documentary series, filmed over four years across 64 different countries. Learn more.
Lesson Express
Q: What impact do rivers have on the environment?
A: They erode mountains and transport the sediment; they form deltas and estuaries.
Q: How are living things adapted to the delta habitat?
A: Mangroves grow in deep water rather than dry soil; macaques swim, hold their breath, and eat crabs and sunken food; snow geese rest and refuel in salt-marsh estuaries along their migration.
Q: Do you think the mouth of a river is a good place for people to build homes? Why or why not?
A: Student responses will vary. Students may say no because there is constant deposition of sediment or because the area is prone to seasonal flooding.