Aquatic
caddis fly larvae with cases incorporating gold, opal, and turquoise
Caddis flies produce aquatic larvae that
protect their developing bodies by manufacturing sheaths spun from
silk and incorporating substances available in their ecosystem. If other
suitable materials are introduced into their environment, they will often
incorporate those as well: gold spangles, semi-precious and precious
stones: turquoise, opals, lapis lazuli and coral, as well as pearls, rubies,
sapphires, and diamonds seen here.
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