Is a seal a vertebrate or invertebrate?

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Ivan David Lozada Martinez

The seal is a vertebrate because it has a backbone. All memmbers of the vertebrate or Chordata phylum have backbones.

REFERENCE: http://pets.answers.com/Q/Is_a_seal_vertebrate_or_an_invertebrate

Thu-Alfeqar Razzaq Tweij

The seal is a vertebrate because it has a backbone. Also the seal is a member of mammals, and all mammals are vertebrate because they have internal skeletons with a backbone.