On the ground of the ocean in the water, layer live Bloxes of the Hardshell family. Centuries ago, they were vulnerable creatures, and little protected them against attacks from the fish. One day, the first of them found a shell and started using it as protection. Soon others followed and through centuries of evolution, they became one with their shells. Their shells are now so strong, they can even hold up against the forceful grip of a fish's teeth.

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