Complex sentence: The first recorded cases of tetrodotoxin poisoning were from the logs of Captain James Cook from 7 September 1774, on which date Cook recorded his crew eating some local tropic fish (pufferfish), then feeding the remains to the pigs kept on board.
Split into simpler sentences: The first recorded cases of tetrodotoxin poisoning were from the logs of Captain James Cook from 7 September 1774. He recorded his crew eating some local tropic fish (pufferfish), then feeding the remains to the pigs kept on board.