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Knysna Seahorse in dire straits

The Knysna seahorse Hippocampus capensis is an endemic seahorse species to the Western Cape, found in only three estuarine systems: Swartvlei Estuary, Knysna Estuary, and Keurbooms Estuary. Historically this species was also found in Klein Brak, Groot Brak, Goukamma, Groot, Kromme, Kabeljous, and Gamtoos estuaries but they have not been seen in these systems for […]

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White steenbras

The white steenbras Lithognathus lithognathus is a slow-growing, long-lived, late maturing, and estuarine-dependent species endemic to South Africa. White steenbras is an important recreational and subsistence shore and estuarine fishery species, particularly in the southern and south-eastern coastal regions of South Africa. They can attain 25-30 years of age, and grow over 130cm in length […]

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Edible, exploited, endemic alikreukel

The South African marine resources have been exploited for subsistence purposes for thousands of years, but recently with rapid population growth, and a high concentration of people moving into coastal areas, the exploitation has intensified. Many subsistence fisheries are focused on intertidal and estuarine invertebrates, with the alikreukel Turbo sarmaticus being one of these species. […]

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The world’s largest living fish

We had an interesting visitor into the Knysna lagoon recently, a whale shark Rhincodon typus. Whale sharks are very large, slow-moving filter-feeders which have a circumpolar distribution through all tropical and warm water, between 30°N and 35°S. The distribution of whale sharks is temperature dependent, and they are rarely sighted in areas with a surface […]

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