Videos  
Video

The March of the Christmas Island Red Crabs

In The March of the Christmas Island Red Crabs, narrator Sir David Attenborough describes how millions of red crabs face an unexpected threat to their annual migration — yellow crazy ants, which were introduced to the island by humans. The ants disrupt the crabs' journey, potentially affecting the island's ecosystem and the crabs' survival. This video is excerpted from BBC’s Planet Earth II, a breathtaking documentary series that highlights the natural wonders of our planet.

Video Details
Location:
Christmas Island, Indian Ocean
Grades:
Program:
Planet Earth II
Time:
3:21
Subject:

Lesson Express

Q: How do yellow crazy ants affect red crabs and other animals on the island?
A: They can stop the crabs from migrating, finding food, or laying eggs, which can make it hard for the crabs to survive.

Q: Why is it important to have many different animals and plants in an ecosystem?
A: Having a variety of animals and plants helps keep the environment healthy and stable.

Q: What are some ways we can stop invasive species like yellow crazy ants from causing harm?
A: We can try removing the ants, bringing in natural predators, or fixing the habitats they’ve damaged.

Standards
Keywords
Share:

More Like This

Video
An Army of Spider Crabs

In An Army of Spider Crabs, narrator Sir David Attenborough shows the fascinating journey taken by spider crabs as their giant tribes grow and move through the green seas in Australia. From the hardening of their outer shells to moving in masses, these crabs go through quite the journey. This video is excerpted from BBC’s Blue Planet II, a natural history series that explores the world's oceans, the animals that live in them, and the threats they face, using modern filming techniques and equipment to capture previously unseen areas of the ocean.

Video
The Underwater Adaptations of the Crab and the Octopus

In The Underwater Adaptations of the Crab and the Octopus, narrator Sir David Attenborough explores how the crab and octopus survive. Learn how they have adapted to their environment, including hunting at night. This video is excerpted from BBC’s Blue Planet, a definitive documentary series diving into the mysterious depths of the sea to discover the natural history of the world’s oceans and the rarely seen marine life that reside there.

Video
Predators and Defenders of the Coral Reef

In Predators and Defenders of the Coral Reef, narrator Sir David Attenborough examines what happens when predators descend on the coral reef. Learn how a crab protects the reef. Learn how parrotfish’s actions add up to creating beaches and islands. This video is excerpted from BBC’s Blue Planet, a definitive documentary series diving into the mysterious depths of the sea to discover the natural history of the world’s oceans and the rarely seen marine life that reside there.

Video
Sally Lightfoot Crabs Run the Gauntlet

In Sally Lightfoot Crabs Run the Gauntlet, narrator Sir David Attenborough introduces ​​these colorful crabs who jump from rock to rock as the tide goes out to make it to their feeding ground. The crabs are very determined, but so are some fierce predators along the way. This video is excerpted from BBC’s Blue Planet II, a natural history series that explores the world's oceans, the animals that live in them, and the threats they face, using modern filming techniques and equipment to capture previously unseen areas of the ocean.