Watched an interesting documentary about Great white Shark. One point that really stuck with me was that it said rather than consider all the GW shark around the world as separate groups there was evidence to suggest it was in fact just one Global population that travelled around.
This was backed up by the fact they tracked one female Shark that swam from South Africa to Southern Australia and then back again…they are not sure why but they think breeding may have been the driver. I heard a similar story of another tagged fish (cant remember the species) that crossed the entire Pacific and then swam all the way back again.
It made me wonder how much this is happening on a smaller more “local” scale with our own fish ?
In the case of the GW shark it certainly made me consider just how fragile ecosystems could be if you start taking individuals out of it.
This was backed up by the fact they tracked one female Shark that swam from South Africa to Southern Australia and then back again…they are not sure why but they think breeding may have been the driver. I heard a similar story of another tagged fish (cant remember the species) that crossed the entire Pacific and then swam all the way back again.
It made me wonder how much this is happening on a smaller more “local” scale with our own fish ?
In the case of the GW shark it certainly made me consider just how fragile ecosystems could be if you start taking individuals out of it.
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