Deep-sea rover's rare encounter with a sperm whale has these scientists very excited.

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Recently, the exploration team aboard the Exploration Vessel Nautilus (E/V Nautilus) was able to catch a glimpse of something extremely rare using their Remotely Operated Vehicles (ROVs).

Just off the coast of Louisiana, using ROV Hercules at about 1,900 square feet below the surface in the Gulf of Mexico, a sperm whale was recorded in rare, incredible footage.