I had a good look at my albums from the last 2 years in Namibia and I compared them to the last 2 years in SA
There might be a slight percentage of Bronzies that’s darker to than the rest, that normally due to the area they stay in and maybe because of the food
In Namibia we sometimes catch cob between the kelp and they are much darker (nearly black) than the normal ones
I personally think it comes down to the light when you take a pic , also there will be a huge dif between a early morning pic and a midday or afternoon pic
If you look at your own pics you will see the ones where the shark appear to be darker, well that one has mist and cloud cover in the back ground
On the other one there is very little cloud cover and it’s nearly a clear day
Here are some pics of Bronzies in SA, they are all a bit on the dark site
What’s happening to the Bronzies in Cape Town, are they still there
Haven’t heard of a big one in a few weeks