Sometimes we find out other things from the pole camera. We may see that a shark is tagged or we may see rub-marks from courtship or injuries from boat propellers.
One minute you may estimate the shark’s length at 4m and then a moment later the body and all three points have stretched out and you realise that you are looking at an 8m shark. This shark is feeding right at the surface because it is a very hot day and the plankton, its food, has gathered at the surface. You can see that the water has an oily, bubbly appearance, it is bubbling with life. Photo: Jackie Hall 2012.
Geneticists can identify individual sharks again and again from their DNA and see how closely related they are to one another. These two samples are from the same shark, taken on separate encounters with the same animal. This is vital information, enabling policy makers to make good decisions about how best to conserve these amazing animals. (Hardman et al 2011)
Graham Hall of MBSW The tag was generously sponsored by Tower Insurance of Douglas and placed upon a large male shark, ‘Eric the Goliath’. We also tagged him in 2011. See a video of ‘Fricassonce’ being tagged.