There's some metaphor in the fact that almost everything on a coral reef is beautiful, but we don't see a lot of it unless we are careful and lucky. Without lights, this sponge has very little colour.

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A Mastodon instance for maths people. The kind of people who make \(\pi z^2 \times a\) jokes. Use \( and \) for inline LaTeX, and \[ and \] for display mode.