Right from the outset I am going to tell you that sharks are a necessary part of the food chain and should continue to be protected.
Sharks are predators and scavengers. In their role of scavengers they are natures waste disposal units for the ocean. If there is a sick or dying sea creature the shark is there to clean it up – dispose of it.
Sharks are highly evolved creatures – meaning that nature got them right thousands of years ago. I point this out because I do not believe a shark mistakes a human in a wetsuit for a seal. I believe that what is happening is that the shark goes into cleanup mode around humans in wetsuits.
When a fish is in distress it urinates and it is this that I believe is one of the ways a shark detects that a fish is distressed and needs to be cleaned up.
Most people that wear wetsuits urinate in them. One of the reasons they do this is to create warmth. I know this because I have done it myself when out surfing. If there is a shark in the area I believe this is what it picks up on and therefore not making the mistake of thinking the human is a seal but making the mistake that the human is a distressed sea creature that nature has told it to clean up.
I bet if you ask any shark attack victim – they probably won’t want to admit it – but I bet they urinated in their wetsuit before they were attacked.