Tiger cubs engaged in a vicious mock fight, leatherback hatchlings crawling toward the sea after being rescued from their nest by South Florida researchers, and a snow- and ice-covered Chicago, are just some of the stunning scenes captured by finalists of the 2015 Smithsonian Photo Contest.

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Smithsonian.com released the finalists of its 13th annual photo contest, chosen from over 46,000 submissions from photographers in 168 countries and territories worldwide. Winners will be announced at the end of March.

The categories of the Smithsonian.com photo contest include "The American Experience," "Natural World," "Travel," "Sustainable Travel," "People," "Altered Images" and "Mobile." Finalists in each category were chosen by the Smithsonian.com and Smithsonian magazine photo teams.

The public is invited to vote for the Reader's Choice winner until the end of March. For more information, view the contest here.

MORE FROM WEATHER.COM: Smithsonian Photo Contest 2014