The Sardine Run was first noted in 1853, but it
took 150 years for it to become famous internationally.
About that time, in 2003, Dr. Allan Connell warned
that South Africa was in danger of losing the Run altogether
because of overfishing.
This warning has been echoed by other experts,
most recently by Mark Addison, who helped to pioneer
the tourist industry that has grown up around the Run.
At a talk he gave this past April, Addison called sardines
"the butter of the sea" and noted that if we lose
the sardines, many species that depend on sardines will
also be impacted.
That the Run has had some off years recently has
been well documented -- for instance, local South
Africans have for years, gone down to the sea with
nets and baskets during the Sardine Run and scooped
up the fish from shore. (Think of the grunion run in
Southern California.) For the first time since records
have been kept, there were no reports of netted fish on
beaches in 2013 and 2014.
But the fish returned last year. In a recent article in
the African Journal of Marine Science, Pierre Fréon and
his colleagues have offered another explanation for the
recent decline in sardine sightings. They argue that
increasing water temperatures might be altering fish
behavior. Sardines are being driver deeper and further
offshore due to warmer inshore water temperatures.
Mike Nortje of Pisces Divers agrees that overfishing
is a major problem, but he also stresses that the
iconic films that depict the Sardine Run were shot over
several years (as were some of the most-watches videos
on YouTube). He points out that while baitballs are
definitely rarer than they have been in the past, there
are still lots of baitfish in the water, and they regularly
attract all of the large predators associated with the
Run.
His view? For people who want to do a week on the
water, "It's really a case of expectation management."