Smeared in porpoise oil and impacted by strong currents, Webb reportedly covered 39 miles on his zigzag course.
From the signonsandiego.com
Backed by three escort boats and smeared in porpoise oil, he set off into the ebb tide at a steady breaststroke.
From the en.wikipedia.org
He or she wiped soot and grime off the lanterns, a residue of the whale and porpoise oil, and in later years kerosene, that lit them.
From the washingtonpost.com
Noise from ship traffic and oil platforms is thought to affect the distribution of toothed whales, like the harbour porpoise, that use echolocation for communication and prey detection.