Sewage takes the Vaal River

Water lettuce and dead fish from ANC sewage in the Vaal River

Sewage takes the Vaal River Sewage takes the Vaal River: as the main artery through the Vaal system, this vitally important river performs many vital biological functions. Many animals and organisms rely on the Vaal River for survival. So that they can in turn perform their recipricol biological functions. This is how the environment keeps … Read more

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Red tides are mainly caused by Sewage

Red tide glowing at night in False Bay

Red tides are mainly caused by Sewage Red tides are mainly caused by Sewage: Sewage = nutrients. Nutrients + warm temperatures = exponential growth of biomass. A red tide is known scientifically as an HAB, or Harmful Algae Bloom. Red tides have also occurred in the wild where no human sewage occurs. But this red … Read more

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Rock Salmon: how far upriver do they swim?

Rock Salmon - how far upriver do they swim?

Rock Salmon: how far upriver do they swim? Rock Salmon: how far upriver do they swim?: In this quick study, we get a few numbers wrong…but you get the picture at the end. This day, we were doing some 3D work at the very top of the Umzimkulu Estuary. We were on the St. Helens … Read more

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What causes a red tide?

Ethekweni Municipality issues warning about themselves

What causes a red tide? What causes a red tide?: When the images of the red tide started popping up on my screen, of a possible red tide off the KZN coast, I never believed it and called BS. I mean, we have the mighty Agulhas current right? Travelling at a heady 6 knots, north … Read more

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The two most effective estuary baits by far

Best two estuary baits for the Umzimkulu River

The two most effective estuary baits by far The two most effective estuary baits by far: live baits are sure to be the most fun on any estuary excursion. BUT. You got to catch ’em first! This article focuses on the two most effective ways of fishing in an estuary, with dead bait. Recently I … Read more

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