When did narwhals become endangered?

Actually the narwhal is not extinct, but its conservation status is "special concern". Narwhals are currently not listed under the Species At Risk Act. COSEWIC has recommended that the species be listed as Special Concern. The population of the narwhal is currently estimated at between 10,000 and 45,000. Narwhals are hunted for their tusks, and this is the main risk to the survival of the narwhal. See the link below for more information.