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b6WbQ TIL one of the only great white sharks to do relatively well in captivity was intentionally culled for safety reasons after 10 days. The aquarium sold out tickets for the public to see the shark before it was killed.
d8jn8 TIL, Sea World San Diego managed to keep Blue Sharks, a beautiful pelagic species, in captivity. Until they added bull sharks, which ate the blues. No one has managed to copy the feat since.