What kind of whale has made the longest migration of any mammal?

Here is the question :

WHAT KIND OF WHALE HAS MADE THE LONGEST MIGRATION OF ANY MAMMAL?

Here is the option for the question :

• Sperm whale
• Bowhead whale
• Gray whale
• Beluga whale

The Answer:

And, the answer for the the question is :

Explanation:

[STC006833] In 2015, scientists tracked a female western gray whale, who swam from Russia to Mexico and back again, traveling a total of 13,988 miles in 172 days. The whale named Varvara was tagged near Russia’s Sakhalin Island, and the satellite tracking showed her travel across the north Pacific near Alaska, then follow the western U.S. coast south to Baja California, Mexico.