So on my last day in S. Africa we had the privilege of meeting with marine biologist Alison Towner at Marine Dynamics who presented, Predator vs Predator , a presentation on the attacks of orca (killer) whales on great white sharks in the Gansbaai area (The peak season for seeing great whites is about March to September). This was a very unique and interesting presentation because this is a problem that has been seen in places such as the Farallon Islands but not in the False Bay area. This has really hurt & affected the great whites in the area and is something that researchers are now looking into. The researchers use the dorsal fins of sharks to identify them because they are like fingerprints - unique to each animal. Sharks, like many animals, release a death hormone when they are killed and this plays a big part in the disappearance of sharks after an attack. Great whites became a protected species in S. Africa in 1991 and so when a great white washes ashore dead ...