It's not hard to sea why Cesar Espino is a hero after viewing a video of him diving into the ocean's depths to cut fishing line free from a Byrde whale.

Filmed off the coast of the Canary Islands in Spain, Cesar only took breaks from the hour-long rescue in order to breath.

Once the 45-foot-long mammal's fins and mouth were freed, Mr. Espino trailed after the creature, making sure it would be safe.

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