Obtención de los alimentos – Clip

The video describes a small crab, comparable in size to a fingernail, that filters sand around its burrow to extract food. It leaves behind waste in the form of neat pellets.

What is the size of the little crab mentioned in the text?

How does the crab filter the sand around its burrow?

What does the crab remove from the sand?

What form does the waste take after the crab processes it?

Describe the role of the crab in its ecosystem based on the text.