South Australia's catastrophic harmful algal bloom now affects almost 30% of the state's coastline, stretching from the Coorong in the state's southeast to the seafood-rich Spencer Gulf to the west.

A beach in Melbourne, Australia has been bathed in an “ethereal glow” at nighttime this week thanks to bioluminescent algae adding a shimmering, electric blue hue to the water and sand. Richard Pensak ...