The dugong, which is in the same order as the manatee, was hunted to extinction in 1767. It had been discovered in 1731.
Peacocks and peahens are not endangered.
Blue whales, Dugongs and some types of sharks
1973
1234
dugongs are an endangered species so it is illegal to hunt them also there are some in captivity to help keep numbers up i hope this answers your question.
Mankind.
The Dugongs are listed with a status of "vulnerable" according to the IUCN Red List, and their population trend "unknown". For more details, please see sites listed below.
1970.
1997
people capture over 1,500 seahorses a year that's why their endangered.
year 1000
around 1972