Crownofthorns starfish are large, spiny, and eat coral reefs and without enough natural predators to control their population, someone had to create one.

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Sources:
https://animaldiversity.org/accounts/...
https://www.cnn.com/2020/04/07/austra...
https://oceanservice.noaa.gov/facts/c...
https://oceana.org/marinelife/corals...
https://www.evolvingscience.com/inte...
https://www.ncbi.nlm.nih.gov/pmc/arti...
https://www.barrierreef.org/thereef/...
https://www.aims.gov.au/docs/media/fe...
https://www.asme.org/topicsresources...
https://www.smithsonianmag.com/innova...
https://www.sciencedirect.com/science...
https://www.washingtonpost.com/scienc...

Images:
https://www.storyblocks.com/video/sto...
https://www.storyblocks.com/video/sto...
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