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NEWS NEWS The
1-14 August 2017
Cape Whale Coast
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PHOTO: Jax Bath - www.WhaleWatchSA.com
Whale Coast welcomes large number of whales De Waal Steyn
R
esidents of the Cape Whale Coast have reason to jump for joy after an aerial survey has confirmed double the number of whales in our waters compared to last year. According to Dr Els Vermeulen, Research Manager of the Whale
Unit of the University of Pretoria (UP), a total of 109 unaccompanied whales (those that are seen without an associated calf ) and 64 mothercalf pairs were counted during an aerial survey in July. “This brings the total whale count to 237 compared to last year's annual count that showed the lowest number in the last 20 years. In 2016, we counted only 9 unaccompa-
nied whales and 55 mothercalf pairs, giving us a total of 119 Southern Right Whales. All calves that were counted in July were in the De Hoop area while 24 unaccompanied whales were counted in Walker Bay.” Els was appointed in April this year as Research Manager and post-doctoral research fellow, meaning that she is responsible for the annual Southern
Right Whale counts, identifications and associated data analysis. The research unit holds the longest standing database on any marine mammal in the world after the annual whale counts were started by the late Prof Peter Best in the early 1970s. “From the aerial surveys, we have noticed a decrease in unaccompanied whales since 2009. For mother-calf pairs we
had a peak in 2014 but noticed a strong decrease in sightings along our coasts since 2015. The annual surveys are done between Nature's Valley and Muizenberg. However, due to the low count last year we extended our survey area up to Lambert's Bay to see if the whales were on the West Coast... but with no success,” says Els.
for the decrease in sightings remain speculative, but it seems to be happening on a global scale. In Argentina and Brazil, they have observed the same trend in recent years, as well as Australia although there it seems to be a year off, as whale sightings decreased in 2014 and 2015 and the whales seem to have increased in numbers again in 2016.
She explains that the reasons
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