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. 2019 Aug 27;2:28. doi: 10.3389/fdata.2019.00028

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Copyright © 2019 Xu, Li, Cai and Mackey.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Examples of tweets and websites detected selling ivory online. (A) An example tweet selling carved ivory necklace; (B) An example tweet selling a tea caddy decorated with carved ivory; (C) An example tweet providing hyperlinks that redirected Twitter users to a trading site.