Dozen air pumps turned on in Monterey harbor to prevent massive anchovy die-off

An invasion of anchovies has prompted Monterey’s harbor master to activate more than a dozen air pumps to add oxygen to the water, to prevent their mass suffocation.

Hundreds of sea lions and pelicans are crowding the city’s waterfront, drawn by the schools of migrating Northern anchovies, city officials said in a weekly email on Friday.