Tonic Immobility in Sharks


What is tonic immobility Tonic immobility, also known as (TI) is an unlearned reflex action that leads to a state of paralysis that some animals can enter into involuntarily when they feel threatened and is characterised by a state of immobility. This behaviour has been reported to occur in a variety of animals including insects, reptiles, birds, amphibians, mammals and fish. How TI affects sharks Although this phenomenon does not occur…

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Shark Bookings Week in Review


Gansbaai   After a poor run of weather at the end of May and beginning of June, fortunately the weather has improved. While there have been the odd no-sea days, the days on the water have been great. I am happy to say that all of the boats are now working exclusively at the Island and visibility has been fantastic. The sharks have been a little shy and lazy, with…

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Shark Mysteries

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It’s no secret that sharks, particularly Great White Sharks, have become something of a fascination for humans. As much as we fear them, we are intrigued by them. But the one thing that any scientist or marine biologist will readily tell you is that the reputation currently held by sharks is an undeserving one. They are not the mean, man-eating machines the media has made them out to be. In…

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Weird Things Found in the Stomachs of Sharks


In case you didn’t know, sharks never stop moving, and as a result they burn a very large amount of calories. Always being on the move invariably means that sharks are almost always hungry, since the energy they require to keep going comes from the food they eat. In short: these powerful predators of the oceans are always on the prowl for their next meal. As a result, they have…

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Sharkbookings Review


Winter is here and the seasons for the dives are all changing. Great Whites are in peak season now and the Sardine Run is soon to start! Gansbaai Winter has hit us with a bang in the last couple of weeks. We had a very gentle start but the last two weeks has seen cold front after cold front hitting us. We have had severe hail and also snow on the…

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