Complex sentence: It symbolizes the eight centuries of activity that characterized the maritime Cantabria, and also contains hagiographic references with the heads of the martyr saints Emeterius and Celedonius, representing the unity of the territory under their patronship.
Split into simpler sentences: It symbolizes the eight centuries of activity that characterised the maritime Cantabria. The hagiographic references consist in the heads of the martyr saints Emeterius and Celedonius, representing the unity of the territory under their patronship.