How is the population of Narwhal ivory?

A question from a reader.

Purchased from Getty Images 12/17/21 at 8.46 pm

The males have a single 9-foot long tusk protruding from their upper lip, hence the name "unicorns of the sea." Narwhals are about 15 feet long, excluding the tusk. The males are larger than the females.

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Freda Savahl

Retired Nurse Practitioner WHC /Contract Provider Deployment Military Services. US Citizen. Immigrant from South Africa 1978.