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Tag Archives | fish

plastics in fish

Are we eating plastic eating fish?

Plastics are one of humans’ most recent ubiquitous and long-lasting changes to Earth’s surface. Due to the durable, inexpensive, lightweight, strong nature of plastics, they are suitable for an immense range of products, including a number of single-use items. Unfortunately, the same properties that make plastics suitable for a variety of applications make them a […]

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65 whale shark banner

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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59 seismic survey

Seismic survey effects on turtles, fish, and invertebrates

When one thinks about sound in a marine environment, the clicks and squeals of dolphins, and long songs of the whales comes first to mind. So it would seem logical to think that the acoustic signal from a seismic survey array affects primarily dolphins and whales. While much concern has been over the wellbeing of […]

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41 SASSI

Fish are friends not food

Water covers 71% of the worlds surface, and 97% of that water is in the oceans. Oceans, while appearing infinitely large, are not an infinite resource. Oceans provide many important services and functions, most of which people may be unaware of, such as: nutrient recycling, primary production, provide shelter to many marine species, provide food […]

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37 black tail

Blacktail – abundant, ubiquitous, and hermaphroditic

Anglers and visitors to the underwater world in our beautiful Plettenberg Bay may be familiar with a fish called blacktail Diplodus capensis, though perhaps the name dassie or Cape white seabream is more familiar. This is an oval-shaped fish which is primarily silver in colour with a black patch at the base of the tail. […]

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