“In June and July, it’s not uncommon for whales to stop water traffic in Sydney. Winter heralds the opening of the so-called humpback highway, a migratory corridor along Australia’s east coast used by about 40,000 of the massive creatures as they travel from feeding grounds in freezing Antarctica to tropical breeding areas off Queensland state…

The humpback gridlock marks a sharp reversal of fortune for the whales. They were once hunted for meat and oil, and numbers dwindled to a few hundred before humpbacks became a protected species in the Southern Hemisphere in 1963.

The humpback boom to about 40,000 since has brought the creatures into more frequent contact with people than before. That means more entanglements with fishing nets or run-ins with watercraft.”

From Associated Press.