Because apparently I’m not smart enough to understand this. A marine researcher is clearly needed.
So some scientists in Australia discovered that a shark native to the tropics has mated with a shark that is very similar (both are called black tip sharks) and produced a hybrid. That I get.
What I don’t understand is this:
The Australian black-tip is slightly smaller than its common cousin and can only live in tropical waters, but its hybrid offspring have been found 2,000 kilometres down the coast, in cooler seas.
It means the Australian black-tip could be adapting to ensure its survival as sea temperatures change because of global warming.
Let me see if I follow: A shark that can only survive in warm waters mates with a shark that lives in cool waters due to rising temperatures?
And this counts as a valid scientific hypothesis because….why exactly?

