Study tracks elephant tusks from 16th century shipwreck

Study tracks elephant tusks from 16th century shipwreck (National Museum of Namibia)

Scientists have discovered the origins of more than 100 elephant tusks found on a ship that sank in 1533.

Almost 500 years ago the Bom Jesus – a Portuguese trading vessel carrying 40 tonnes of cargo including gold, silver, copper and more than 100 elephant tusks – sank off the coast of Africa near present-day Namibia.