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Answer :

Answer:

Benthos

Explanation:

because they live on the ocean floor

Answer:

Crabs are Benthos.

Explanation:

  • Crabs belong to the subphylum Crustacean
  • Crabs are invertebrates
  • Crabs are neither amphibians nor reptiles
  • Life in the benthos region is organized by size.
  • Benthic organisms live on or just beneath the bottom of the lagoon or in the intertidal zone
  • Crabs live on ocean floor.