BBC Learning Zone Clips

CLIP 12842

Crab balls

Crab balls
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Key Info
  • Crab balls
  • Duration: 01:34
  • On the beaches of Northern Australia, the sand bubbler crab must work at break neck speed to feed as much as possible in between each tide. Working thoroughly across the top layers of the beach, the crab passes each grain of sand through its mouth, filtering out all the microscopic animals. It then discards the rest as small balls of sand. Timelapse shows just how much ground they cover in this short window of time. This clip from The Blue Planet was first published on Nature Video Collections: bbc.co.uk/nature/collections. Please note this clip is only available in Flash
  • Subject:

    Science

       Topic:

    Living Things in their Environments: Feeding Relationships

  • Keywords: environment, food chains, crabs, food, feeding, micro-organisms, timelapse, miofauna, meiofauna, beach, sand, sand bubbler, nature video collections
Ideas for use in class
  • Use this clip when looking at animals in different environments and what they eat. Challenge the pupils to make as many plasticine balls as possible in 30 seconds.
Background details
  • Clip language : English
  • Aspect ratio : 16x9

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